Windows get resized when switch to fullscreen and back to desktop

[warpdesign]

Environment

Item	Value
OS, Version / Build	Windows 10 version 10.0.19041.388
Processor Architecture	AMD64
Processor Type & Model	Core i5 (Skylake)
Memory	8GB
Storage Type, free / capacity (e.g. C: SSD 128GB / 512GB)	SSD 256GB
Relevant apps installed	___

Description

When switching to full screen in some apps/games, when going back to the desktop, most of my windows get messed up: they are moved/resized.

Steps to reproduce

• download dosbox
• open any windows and maximize them
• start dosbox and press alt + enter
• press alt + enter to switch back to window mode

Expected behavior

Previously opened windows should be left untouched: positioned at the same position and with the same size.

Actual behavior

Some windows get moved/resized.

See this video: https://youtu.be/UtB7P8f2j2A

As you can see, the Chrome Window takes most of the screen before switching to fullscreen and get resized when switching back to window mode.

[orcmid]

(Get this is not current meaning of "performance.")

I haven't seen such a blatant case. What happens for some games that run full-screen is afterwards, my Bing Toolbar is moved from where I always park it to the middle of my screen somewhere. I suspect some sort of (usually invisible) screen re-sizing/scaling that happens when the game starts up. Since only some games do it, I suspect it is the game engine and not Windows that is the miscreant.

[PS: On a (Windows XP) tablet PC there was a problem if I changed verticality. The remushing of desktop icons would be indelible, so I learned to arrange my desktop icons in a rotation-preserved corner.]

[warpdesign]

Since I remember it happening already in the XP days, I guess it's not an engine problems but rather a problem with Windows. Back then I didn't care. Right now I'm using my computer to do serious work as well as occasional playing.

[adrianghc]

(Get this is not current meaning of "performance.")

I haven't seen such a blatant case. What happens for some games that run full-screen is afterwards, my Bing Toolbar is moved from where I always park it to the middle of my screen somewhere. I suspect some sort of (usually invisible) screen re-sizing/scaling that happens when the game starts up. Since only some games do it, I suspect it is the game engine and not Windows that is the miscreant.

[PS: On a (Windows XP) tablet PC there was a problem if I changed verticality. The remushing of desktop icons would be indelible, so I learned to arrange my desktop icons in a rotation-preserved corner.]

From my experience, this happens with games in exclusive full-screen mode that use a smaller screen resolution than the desktop, though I think that's a different case than the one in this issue.

[warpdesign]

@adrianghc I think that's what you describe. Games/apps use indeed a smaller screen resolution than the desktop.

[adrianghc]

@adrianghc I think that's what you describe. Games/apps use indeed a smaller screen resolution than the desktop.

Yes, but considering the very strange aspect ratio your Chrome window acquires, I'm not sure that's what's at play here, is it? I'm also missing the usually more pronounced delay when entering and leaving exclusive full-screen.

[orcmid]

(Get this is not current meaning of "performance.") I haven't seen such a blatant case. What happens for some games that run full-screen is afterwards, my Bing Toolbar is moved from where I always park it to the middle of my screen somewhere. I suspect some sort of (usually invisible) screen re-sizing/scaling that happens when the game starts up. Since only some games do it, I suspect it is the game engine and not Windows that is the miscreant.

@adrianghc From my experience, this happens with games in exclusive full-screen mode that use a smaller screen resolution than the desktop, though I think that's a different case than the one in this issue.

I think that is my experience, the game opens to a default resolution that is less than my screen resolution and snaps to my full-screen faster than I can notice, probably before anything paints. I don't think I have seen the case identified in this issue though.

[AvriMSFT]

Unfortunately, this issue is out of scope for this repo, so it won't be tracked here. BUT the team responsible for this issue gets feedback and bug reports via Feedback Hub! Please file this issue in the Feedback Hub under "Displays and Graphics -> Multiple Displays". Once you've done this, please paste the link here and I can go ahead and give the feedback an upvote.

I've reached out to the team responsible and it looks like they're already tracking this bug and exploring solutions. Thanks for filing!

[Eli-Black-Work]

@AvriMSFT, This bug isn't about multiple displays. Should feedback still be filed there?

[AvriMSFT]

Yes. I spoke with a rep and they recommended you file there.

[warpdesign]

I filled an issue in FH: https://aka.ms/AAbz26p as suggested.

[AvriMSFT]

Upvoted