[BUG] gzdoom resets custom pixel scaling to 300x200

GZDoom version

GZDoom 4.10.0
Which game are you running with GZDoom?

Doom 2
What Operating System are you using?

Linux x86_64
Please describe your specific OS version

Linux Mint 21.1 Cinnamon
Relevant hardware info

AMD 5900x Nvidia RTX 4080TI
Have you checked that no other similar issue already exists?

[X] I have searched and not found similar issues.
A clear and concise description of what the bug is.

When you set the custom pixel scaling in gzdoom, the setting will properly apply it to the current session. When you go and save current settings, the custom pixel scale does not get saved and changes to 300x200. If you manually edit the config file, gzdoom will reset the values back to 300x200 when launching.
One workaround is to manually enter the desired custom pixel scaling in gzdoom.ini and then make it read-only.
Steps to reproduce the behaviour.

Explain how to reproduce
Launch GZDoom
Select Options
Select Full options menu
select set video mode
under Custom Pixel Scaling, edit the custom width and custom height to your desired values.
Apply Changes (Fullscreen)
press escape to go back to previous menu
select Save current settings
close down gzdoom and relaunch
If you're unable to recreate this issue, rename your gzdoom.ini to something to the affect of gzdoom.ini.bak, then go through the steps again.
logs for below request log.txt log2.txt
Your configuration

# This file was generated by GZDoom 4.10.0 on 2023-05-19 17:40:48
# These are the directories to automatically search for IWADs.
# Each directory should be on a separate line, preceded by Path=
[IWADSearch.Directories]
Path=.
Path=$DOOMWADDIR
Path=$HOME/.config/gzdoom
Path=$HOME/.local/share/games/doom
Path=/usr/local/share/doom
Path=/usr/local/share/games/doom
Path=/usr/share/doom
Path=/usr/share/games/doom

# These are the directories to search for wads added with the -file
# command line parameter, if they cannot be found with the path
# as-is. Layout is the same as for IWADSearch.Directories
[FileSearch.Directories]
Path=$HOME/.config/gzdoom
Path=$HOME/.local/share/games/doom
Path=/usr/local/share/
Path=/usr/local/share/doom
Path=/usr/local/share/games/doom
Path=/usr/share/doom
Path=/usr/share/games/doom
Path=$DOOMWADDIR

# These are the directories to search for soundfonts that let listed in the menu.
# Layout is the same as for IWADSearch.Directories
[SoundfontSearch.Directories]
Path=$HOME/.config/gzdoom/soundfonts
Path=$HOME/.config/gzdoom/fm_banks
Path=$HOME/.local/share/games/doom/soundfonts
Path=$HOME/.local/share/games/doom/fm_banks
Path=/usr/local/share/doom/soundfonts
Path=/usr/local/share/doom/fm_banks
Path=/usr/local/share/games/doom/soundfonts
Path=/usr/local/share/games/doom/fm_banks
Path=/usr/share/doom/soundfonts
Path=/usr/share/doom/fm_banks
Path=/usr/share/games/doom/soundfonts
Path=/usr/share/games/doom/fm_banks

# Files to automatically execute when running the corresponding game.
# Each file should be on its own line, preceded by Path=

[Doom.AutoExec]
Path=/home/victorkruger/.config/gzdoom/autoexec.cfg

[Heretic.AutoExec]
Path=/home/victorkruger/.config/gzdoom/autoexec.cfg

[Hexen.AutoExec]
Path=/home/victorkruger/.config/gzdoom/autoexec.cfg

[Strife.AutoExec]
Path=/home/victorkruger/.config/gzdoom/autoexec.cfg

[Chex.AutoExec]
Path=/home/victorkruger/.config/gzdoom/autoexec.cfg

# WAD files to always load. These are loaded after the IWAD but before
# any files added with -file. Place each file on its own line, preceded
# by Path=
[Global.Autoload]

# Wad files to automatically load depending on the game and IWAD you are
# playing.  You may have have files that are loaded for all similar IWADs
# (the game) and files that are only loaded for particular IWADs. For example,
# any files listed under 'doom.Autoload' will be loaded for any version of Doom,
# but files listed under 'doom.doom2.Autoload' will only load when you are
# playing a Doom 2 based game (doom2.wad, tnt.wad or plutonia.wad), and files listed under
# 'doom.doom2.commercial.Autoload' only when playing doom2.wad.

[doom.Autoload]

[doom.id.Autoload]

[doom.id.doom2.Autoload]

[doom.id.doom2.commercial.Autoload]

[doom.id.doom2.commercial.french.Autoload]

[doom.id.doom2.commercial.xbox.Autoload]

[doom.id.doom2.unity.Autoload]

[doom.id.doom2.bfg.Autoload]

[doom.id.doom2.plutonia.Autoload]

[doom.id.doom2.plutonia.unity.Autoload]

[doom.id.doom2.tnt.Autoload]

[doom.id.doom2.tnt.unity.Autoload]

[doom.id.doom1.Autoload]

[doom.id.doom1.registered.Autoload]

[doom.id.doom1.ultimate.Autoload]

[doom.id.doom1.ultimate.xbox.Autoload]

[doom.id.wadsmoosh.Autoload]

[doom.id.doom1.unity.Autoload]

[doom.id.doom1.bfg.Autoload]

[doom.freedoom.Autoload]

[doom.freedoom.demo.Autoload]

[doom.freedoom.phase1.Autoload]

[doom.freedoom.phase2.Autoload]

[doom.freedoom.freedm.Autoload]

[heretic.Autoload]

[heretic.heretic.Autoload]

[heretic.shadow.Autoload]

[blasphemer.Autoload]

[hexen.Autoload]

[hexen.deathkings.Autoload]

[hexen.hexen.Autoload]

[strife.Autoload]

[strife.strife.Autoload]

[strife.veteran.Autoload]

[chex.Autoload]

[chex.chex1.Autoload]

[chex.chex3.Autoload]

[urbanbrawl.Autoload]

[hacx.Autoload]

[hacx.hacx1.Autoload]

[hacx.hacx2.Autoload]

[harmony.Autoload]

[square.Autoload]

[square.squareware.Autoload]

[square.square.Autoload]

[delaweare.Autoload]

[woolball.Autoload]

[woolball.rotwb.Autoload]

[LastRun]
Version=223

[GlobalSettings]
I_FriendlyWindowTitle=1
adl_chips_count=6
adl_emulator_id=0
adl_fullpan=true
adl_run_at_pcm_rate=false
adl_volume_model=0
autoloadbrightmaps=false
autoloadlights=false
autoloadwidescreen=true
autosavecount=4
autosavenum=1
chase_dist=90
chase_height=-8
cl_capfps=false
cl_defaultconfiguration=0
cl_noprediction=false
cl_oldfreelooklimit=false
cl_predict_lerpscale=0.05000000074505806
cl_predict_lerpthreshold=2
cl_predict_specials=true
cl_run=false
cl_scaleweaponfov=1
cl_waitforsave=true
con_4bitansi=false
con_buffersize=-1
con_ctrl_d=
con_notifylines=4
con_printansi=true
defaultiwad=
demo_compress=true
developer=0
disableautoload=false
disableautosave=0
enablescriptscreenshot=false
fluid_chorus=false
fluid_chorus_depth=8
fluid_chorus_level=1
fluid_chorus_speed=0.30000001192092896
fluid_chorus_type=0
fluid_chorus_voices=3
fluid_gain=0.5
fluid_interp=1
fluid_lib=
fluid_patchset=gzdoom
fluid_reverb=false
fluid_reverb_damping=0.23000000417232513
fluid_reverb_level=0.5699999928474426
fluid_reverb_roomsize=0.6100000143051147
fluid_reverb_width=0.7599999904632568
fluid_samplerate=0
fluid_threads=1
fluid_voices=128
freelook=true
gl_billboard_faces_camera=false
gl_billboard_mode=0
gl_billboard_particles=true
gl_cachenodes=true
gl_cachetime=0.6000000238418579
gl_debug=false
gl_debug_breakpoint=false
gl_debug_level=0
gl_distfog=70
gl_dither_bpc=0
gl_enhanced_nv_stealth=3
gl_es=false
gl_finishbeforeswap=false
gl_fxaa=0
gl_lens=false
gl_lens_chromatic=1.1200000047683716
gl_lens_k=-0.11999999731779099
gl_lens_kcube=0.10000000149011612
gl_light_particles=true
gl_light_shadowmap=false
gl_light_sprites=true
gl_lights=true
gl_mask_sprite_threshold=0.5
gl_mask_threshold=0.5
gl_mirror_envmap=true
gl_multisample=32
gl_multithread=true
gl_no_skyclear=false
gl_particles_style=2
gl_pipeline_depth=0
gl_plane_reflection=true
gl_satformula=1
gl_seamless=true
gl_shadowmap_filter=3
gl_shadowmap_quality=512
gl_sort_textures=false
gl_sprite_blend=false
gl_ssao=0
gl_ssao_portals=1
gl_ssao_strength=0.699999988079071
gl_texture_filter=4
gl_texture_filter_anisotropic=16
gl_texture_hqresize_maxinputsize=512
gl_texture_hqresize_mt_height=4
gl_texture_hqresize_mt_width=16
gl_texture_hqresize_multithread=true
gl_texture_hqresize_targets=15
gl_texture_hqresizemode=4
gl_texture_hqresizemult=2
gl_usecolorblending=true
gme_stereodepth=0
gus_memsize=0
gus_patchdir=
i_discordrpc=false
i_pauseinbackground=true
i_soundinbackground=false
inter_subtitles=false
invertmouse=false
invertmousex=false
language=auto
longsavemessages=false
lookstrafe=false
m_blockcontrollers=false
m_cleanscale=false
m_forward=1
m_pitch=1
m_sensitivity_x=2
m_sensitivity_y=1
m_show_backbutton=0
m_showinputgrid=0
m_side=2
m_simpleoptions=true
m_use_mouse=2
m_yaw=1
map_point_coordinates=true
midi_config=
midi_dmxgus=false
midi_voices=32
mod_autochip=false
mod_autochip_scan_threshold=12
mod_autochip_size_force=100
mod_autochip_size_scan=500
mod_dumb_mastervolume=1
mod_interp=2
mod_samplerate=0
mod_volramp=2
mouse_capturemode=1
mus_calcgain=true
mus_enabled=true
mus_gainoffset=0
mus_usereplaygain=false
nointerscrollabort=false
nomonsterinterpolation=false
opl_core=0
opl_fullpan=true
opl_numchips=2
opn_chips_count=8
opn_emulator_id=0
opn_fullpan=true
opn_run_at_pcm_rate=false
os_isanyof=true
png_gamma=0
png_level=5
queryiwad=true
quicksavenum=-1
quicksaverotation=false
quicksaverotationcount=4
r_actorspriteshadow=2
r_actorspriteshadowdist=1500
r_blendmethod=false
r_dynlights=false
r_fakecontrast=1
r_fullbrightignoresectorcolor=true
r_fuzzscale=true
r_line_distance_cull=0
r_linearsky=false
r_magfilter=false
r_minfilter=true
r_mipmap=true
r_mirror_recursions=4
r_models=true
r_multithreaded=1
r_noaccel=false
r_quakeintensity=1
r_skipmats=false
r_sprite_distance_cull=0
r_spriteadjust=2
r_ticstability=true
save_dir=
save_formatted=false
saveloadconfirmation=true
savestatistics=0
screenshot_dir=
screenshot_quiet=false
screenshot_type=png
show_messages=true
showendoom=1
snd_aldevice=Default
snd_alresampler=Default
snd_backend=openal
snd_buffersize=0
snd_channels=128
snd_efx=true
snd_enabled=true
snd_hrtf=-1
snd_mastervolume=1
snd_mididevice=-6
snd_midiprecache=false
snd_musicvolume=0.3999999761581421
snd_samplerate=0
snd_sfxvolume=1
snd_streambuffersize=64
snd_waterreverb=true
statfile=zdoomstat.txt
storesavepic=true
strictdecorate=false
telezoom=true
timidity_channel_pressure=false
timidity_chorus=0
timidity_config=gzdoom
timidity_drum_effect=false
timidity_drum_power=1
timidity_key_adjust=0
timidity_lpf_def=1
timidity_min_sustain_time=5000
timidity_modulation_envelope=true
timidity_modulation_wheel=true
timidity_overlap_voice_allow=true
timidity_pan_delay=false
timidity_portamento=true
timidity_reverb=0
timidity_reverb_level=0
timidity_surround_chorus=false
timidity_temper_control=true
timidity_tempo_adjust=1
turnspeedsprintfast=1280
turnspeedsprintslow=320
turnspeedwalkfast=640
turnspeedwalkslow=320
use_joystick=false
use_mouse=true
vid_activeinbackground=false
vid_adapter=0
vid_aspect=3
vid_brightness=0
vid_contrast=1
vid_cropaspect=true
vid_defheight=480
vid_defwidth=640
vid_fullscreen=true
vid_gamma=1.299999713897705
vid_hdr=false
vid_maxfps=200
vid_preferbackend=1
vid_rendermode=4
vid_saturation=1
vid_scale_customheight=1152
vid_scale_custompixelaspect=1
vid_scale_customwidth=1536
vid_scale_linear=true
vid_scalefactor=1
vid_scalemode=5
vid_sdl_render_driver=
vid_vsync=false
vk_debug=false
vk_debug_callstack=true
vk_device=0
vk_hdr=false
vr_hunits_per_meter=41
vr_ipd=0.06199999898672104
vr_mode=0
vr_screendist=0.800000011920929
vr_swap_eyes=false
wildmidi_config=
wildmidi_enhanced_resampling=true
wildmidi_reverb=false
win_h=1152
win_maximized=false
win_w=2048
win_x=3616
win_y=1264
xbrz_centerdirectionbias=4
xbrz_colorformat=0
xbrz_dominantdirectionthreshold=3.5999999046325684
xbrz_equalcolortolerance=30
xbrz_luminanceweight=1
xbrz_steepdirectionthreshold=2.200000047683716

[GlobalSettings.Unknown]

[Doom.Player]
autoaim=35
classicflight=false
color=40 cf 00
colorset=0
fov=100.03125
gender=male
movebob=0.25
name=Player
neverswitchonpickup=false
playerclass=Fighter
skin=base
stillbob=0
team=255
vertspread=false
wbobfire=0
wbobspeed=1
wi_noautostartmap=false

[Doom.ConsoleVariables]
addrocketexplosion=false
adl_bank=14
adl_custom_bank=
adl_use_custom_bank=false
allcheats=false
am_backcolor=6c 54 40
am_cdwallcolor=4c 38 20
am_colorset=0
am_customcolors=true
am_drawmapback=1
am_efwallcolor=66 55 55
am_emptyspacemargin=0
am_fdwallcolor=88 70 58
am_followplayer=true
am_gridcolor=8b 5a 2b
am_interlevelcolor=ff 00 00
am_intralevelcolor=00 00 ff
am_linealpha=1
am_linethickness=1
am_lockedcolor=00 78 00
am_map_secrets=1
am_markcolor=2
am_markfont=AMMNUMx
am_notseencolor=6c 6c 6c
am_ovcdwallcolor=00 88 44
am_ovefwallcolor=00 88 44
am_overlay=0
am_ovfdwallcolor=00 88 44
am_ovinterlevelcolor=ff ff 00
am_ovlockedcolor=00 88 44
am_ovotherwallscolor=00 88 44
am_ovportalcolor=00 40 22
am_ovsecretsectorcolor=00 ff ff
am_ovsecretwallcolor=00 88 44
am_ovspecialwallcolor=ff ff ff
am_ovtelecolor=ff ff 00
am_ovthingcolor=e8 88 00
am_ovthingcolor_citem=e8 88 00
am_ovthingcolor_friend=e8 88 00
am_ovthingcolor_item=e8 88 00
am_ovthingcolor_monster=e8 88 00
am_ovthingcolor_ncmonster=e8 88 00
am_ovunexploredsecretcolor=00 ff ff
am_ovunseencolor=00 22 6e
am_ovwallcolor=00 ff 00
am_ovyourcolor=fc e8 d8
am_portalcolor=40 40 40
am_portaloverlay=true
am_rotate=0
am_secretsectorcolor=ff 00 ff
am_secretwallcolor=00 00 00
am_showcluster=false
am_showepisode=false
am_showgrid=false
am_showitems=false
am_showkeys=true
am_showkeys_always=false
am_showmaplabel=2
am_showmonsters=true
am_showsecrets=true
am_showthingsprites=0
am_showtime=true
am_showtotaltime=false
am_showtriggerlines=0
am_specialwallcolor=ff ff ff
am_textured=false
am_thingcolor=fc fc fc
am_thingcolor_citem=fc fc fc
am_thingcolor_friend=fc fc fc
am_thingcolor_item=fc fc fc
am_thingcolor_monster=fc fc fc
am_thingcolor_ncmonster=fc fc fc
am_thingrenderstyles=true
am_tswallcolor=88 88 88
am_unexploredsecretcolor=ff 00 ff
am_wallcolor=2c 18 08
am_xhaircolor=80 80 80
am_yourcolor=fc e8 d8
am_zoomdir=0
blood_fade_scalar=1
chat_substitution=false
chatmacro0=No
chatmacro1=I'm ready to kick butt!
chatmacro2=I'm OK.
chatmacro3=I'm not looking too good!
chatmacro4=Help!
chatmacro5=You suck!
chatmacro6=Next time, scumbag...
chatmacro7=Come here!
chatmacro8=I'll take care of it.
chatmacro9=Yes
cl_bbannounce=false
cl_bloodsplats=true
cl_bloodtype=0
cl_custominvulmapcolor1=00 00 1a
cl_custominvulmapcolor2=a6 a6 7a
cl_customizeinvulmap=false
cl_doautoaim=false
cl_gfxlocalization=3
cl_maxdecals=1024
cl_missiledecals=true
cl_nointros=false
cl_pufftype=0
cl_rockettrails=1
cl_showmultikills=true
cl_showsecretmessage=true
cl_showsprees=true
cl_spreaddecals=true
classic_scaling_factor=1
classic_scaling_pixelaspect=1.2000000476837158
compatmode=0
con_alpha=0.75
con_centernotify=false
con_midtime=3
con_notablist=false
con_notifytime=3
con_pulsetext=false
con_scale=0
con_scaletext=0
crosshair=0
crosshaircolor=ff 00 00
crosshairforce=false
crosshairgrow=false
crosshairhealth=2
crosshairon=true
crosshairscale=0.5
dehload=0
dimamount=-1
dimcolor=ff d7 00
displaynametags=0
dlg_musicvolume=1
dlg_vgafont=false
gl_aalines=false
gl_bandedswlight=false
gl_bloom=false
gl_bloom_amount=1.399999976158142
gl_brightfog=false
gl_coronas=true
gl_enhanced_nightvision=true
gl_exposure_base=0.3499999940395355
gl_exposure_min=0.3499999940395355
gl_exposure_scale=1.2999999523162842
gl_exposure_speed=0.05000000074505806
gl_fogmode=2
gl_fuzztype=0
gl_interpolate_model_frames=true
gl_light_models=true
gl_lightadditivesurfaces=false
gl_lightmode=3
gl_menu_blur=-1
gl_paltonemap_powtable=2
gl_paltonemap_reverselookup=true
gl_precache=false
gl_scale_viewport=true
gl_sclipfactor=1.7999999523162842
gl_sclipthreshold=10
gl_spriteclip=1
gl_tonemap=0
gl_weaponlight=8
hud_althud=false
hud_althud_forceinternal=false
hud_althudscale=0
hud_ammo_order=0
hud_ammo_red=25
hud_ammo_yellow=50
hud_armor_green=100
hud_armor_red=25
hud_armor_yellow=50
hud_aspectscale=true
hud_berserk_health=true
hud_health_green=100
hud_health_red=25
hud_health_yellow=50
hud_oldscale=true
hud_scale=0
hud_scalefactor=1
hud_showammo=2
hud_showangles=false
hud_showitems=false
hud_showlag=0
hud_showmonsters=true
hud_showscore=false
hud_showsecrets=true
hud_showstats=false
hud_showtime=0
hud_showtimestat=0
hud_showweapons=true
hud_timecolor=5
hudcolor_ltim=8
hudcolor_statnames=6
hudcolor_stats=3
hudcolor_time=6
hudcolor_titl=10
hudcolor_ttim=5
hudcolor_xyco=3
inter_classic_scaling=true
log_vgafont=false
lookspring=true
m_quickexit=false
msg=0
msg0color=11
msg1color=5
msg2color=2
msg3color=3
msg4color=3
msgmidcolor=11
msgmidcolor2=4
nametagcolor=5
nocheats=false
opn_custom_bank=
opn_use_custom_bank=false
paletteflash=0
pickup_fade_scalar=1
r_deathcamera=false
r_drawfuzz=1
r_maxparticles=4000
r_portal_recursions=4
r_rail_smartspiral=false
r_rail_spiralsparsity=1
r_rail_trailsparsity=1
r_skymode=2
r_vanillatrans=0
sb_cooperative_enable=true
sb_cooperative_headingcolor=6
sb_cooperative_otherplayercolor=2
sb_cooperative_yourplayercolor=3
sb_deathmatch_enable=true
sb_deathmatch_headingcolor=6
sb_deathmatch_otherplayercolor=2
sb_deathmatch_yourplayercolor=3
sb_teamdeathmatch_enable=true
sb_teamdeathmatch_headingcolor=6
screenblocks=10
setslotstrict=true
show_obituaries=true
snd_menuvolume=0.6000000238418579
snd_pitched=false
st_oldouch=false
st_scale=0
transsouls=0.75
ui_screenborder_classic_scaling=true
uiscale=0
underwater_fade_scalar=1
vid_allowtrueultrawide=1
vid_cursor=None
vid_nopalsubstitutions=false
wi_cleantextscale=false
wi_percents=true
wi_showtotaltime=true
wipetype=1

[Doom.LocalServerInfo]
compatflags=0
compatflags2=0
forcewater=false
maxviewpitch=90
sv_corpsequeuesize=64
sv_disableautohealth=false
sv_dropstyle=0
sv_portal_recursions=4
sv_smartaim=0

[Doom.ConfigOnlyVariables]

[Doom.UnknownConsoleVariables]

[Doom.ConsoleAliases]

[Doom.Bindings]
1=slot 1
2=slot 2
3=slot 3
4=slot 4
5=slot 5
6=slot 6
7=slot 7
8=slot 8
9=slot 9
0=slot 0
-=sizedown
Equals=sizeup
Tab=togglemap
W=+forward
E=+use
T=messagemode
LeftBracket=invprev
RightBracket=invnext
Enter=invuse
A=+moveleft
S=+back
D=+moveright
`=toggleconsole
Shift=+speed
\=+showscores
X=crouch
Space=+jump
CapsLock=toggle cl_run
F1=menu_help
F2=menu_save
F3=menu_load
F4=menu_options
F5=menu_display
F6=quicksave
F7=menu_endgame
F8=togglemessages
F9=quickload
F10=menu_quit
F11=bumpgamma
F12=spynext
SysRq=screenshot
Pause=pause
Home=land
PgUp=+moveup
End=centerview
PgDn=+lookup
Ins=+movedown
Del=+lookdown
Mouse1=+attack
Mouse2=+altattack
MWheelUp=weapprev
MWheelDown=weapnext
MWheelRight=invnext
MWheelLeft=invprev
DPadUp=togglemap
DPadDown=invuse
DPadLeft=invprev
DPadRight=invnext
Pad_Start=pause
Pad_Back=menu_main
LThumb=crouch
LShoulder=weapprev
RShoulder=weapnext
LTrigger=+altattack
RTrigger=+attack
Pad_A=+use
Pad_Y=+jump

[Doom.DoubleBindings]

[Doom.AutomapBindings]
0=am_gobig
-=+am_zoomout
Equals=+am_zoomin
P=am_toggletexture
F=am_togglefollow
G=am_togglegrid
C=am_clearmarks
M=am_setmark
KP-=+am_zoomout
KP+=+am_zoomin
UpArrow=+am_panup
LeftArrow=+am_panleft
RightArrow=+am_panright
DownArrow=+am_pandown
MWheelUp=am_zoom 1.2
MWheelDown=am_zoom -1.2
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ZDoom / gzdoom
