C:S workshop assets won't download on new Linux install

Your system information

Computer Information:
    Manufacturer:  Asus 
    Model:  G750-JW
    Form Factor: Laptop
    No Touch Input Detected

Processor Information:
    CPU Vendor:  GenuineIntel
    CPU Brand:  Intel(R) Core(TM) i7-4700HQ CPU @ 2.40GHz
    CPU Family:  0x6
    CPU Model:  0x3c
    CPU Stepping:  0x3
    CPU Type:  0x0
    Speed:  3400 Mhz
    8 logical processors
    4 physical processors
    HyperThreading:  Supported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported
    SSSE3:  Supported
    SSE4a:  Unsupported
    SSE41:  Supported
    SSE42:  Supported
    AES:  Supported
    AVX:  Supported
    CMPXCHG16B:  Supported
    LAHF/SAHF:  Supported
    PrefetchW:  Unsupported

Operating System Version:
    Linux Mint 19.1 Tessa (64 bit)
    Kernel Name:  Linux
    Kernel Version:  4.15.0-43-generic
    X Server Vendor:  The X.Org Foundation
    X Server Release:  11906000
    X Window Manager:  Mutter (Muffin)
    Steam Runtime Version:  steam-runtime-beta-release_2018-11-28

Video Card:
    Driver:  NVIDIA Corporation GeForce GTX 765M/PCIe/SSE2
    Driver Version:  4.6.0 NVIDIA 410.78
    OpenGL Version: 4.6
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 60 Hz
    VendorID:  0x10de
    DeviceID:  0x11e2
    Revision Not Detected
    Number of Monitors:  1
    Number of Logical Video Cards:  1
    Primary Display Resolution:  1600 x 900
    Desktop Resolution: 1600 x 900
    Primary Display Size: 15.04" x 8.43" (17.20" diag)
                                            38.2cm x 21.4cm (43.7cm diag)
    Primary Bus: PCI Express 16x
    Primary VRAM: 2048 MB
    Supported MSAA Modes:  2x 4x 8x 16x 

Sound card:
    Audio device: Realtek ALC3229

Memory:
    RAM:  15990 Mb

Miscellaneous:
    UI Language:  English
    LANG:  en_CA.UTF-8
    Total Hard Disk Space Available:  287346 Mb
    Largest Free Hard Disk Block:  217633 Mb
    VR Headset: None detected

Recent Failure Reports:

Steam client version (build number or date): Dec 14, 2018 at 22:19:08; Steam API: v018
Distribution (e.g. Ubuntu): Linux Mint 19.1 Cinnamon
Opted into Steam client beta?: Yes
Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

I'm subscribed to a large number of assets/mods in Cities: Skylines (C:S). I recently installed a new SSD on my laptop and also installed Steam and C:S on there as well. C:S and all of the DLC downloaded and play fine. However, my subscribed assets and mods from the workshop won't download. Right now in my steamapps/workshop/downloads/255710 folder, all of the folders for the ~9,060 assets are there but remain empty. Every time I try to download them, it preallocates space for 9 minutes and then gives a disk write error, even though this is a new SSD and I've verified that there's no SSD/hardware integrity issues.

Up one folder (steamapps/workshop/downloads) there are ~1,994 .patch files. When I delete these and tried re-downloading, these files come back. The disk write error is always "Update canceled: Failed to write patch state file (Disk write failure) "/home/alborz/.local/share/Steam/steamapps/workshop/downloads/state_255710_255710_1339439093.patch"" or some variant of this with the .patch file being associated with a different asset (1339439093 or another number). The patch file it references never actually exists in the folder, however. Interestingly, these assets are usually from around 22/23 March 2018. I think it tries to download as many assets as it can and then reaches some arbitrary number and refuses to download any futher; it'd explain why the assets are always so close together and why the number of patch files remains nearly constant.

I've attached the workshop_log and the content_log txt files in case they're helpful.

Things I've tried to fix the issue include:

Restarting Steam,
Restarting Linux / the computer,
Verifying the integrity of the game files,
Changing the download area,
Clearing the game cache,
Checking to see if the SSD has any issues (it doesn't),
Running and playing C:S to see if that would trigger the download while playing (it doesn't),
Deleting all the .patch files,
Trying the non-beta version of Steam,
Making C:S updates "High Priority",
Ensuring all folders have read and write (i.e. create and delete files) access enabled,
Deleting Steam and reinstalling, and again trying all of the above.

Steps for reproducing this issue:

Create new Linux Mint 19.1 partition on a new SSD.
Install steam and C:S on the system above.
Attempt to download the "update" which is the workshop assets.

ValveSoftware / steam-for-linux