[Runtime Bug]: Unity 4 titles crashing on startup

Describe the bug

At the moment, Unity games are crashing on or close to startup. This appears to be connected to Unity 4 in specific based on some testing by other community members.
Test cases:

• Xuan-Yuan Sword 6: The Gate of Firmament (Steam)
  • The game is able to open and start its intro movie sequence. Upon reaching the main menu, the game crashes.
  • On one occasion, the game reopened successfully on this version.
• Shadowrun Returns, Shadowrun: Dragonfall Director's Cut (GOG)
  • The game fails to open. A third party debugger prints out an access violation dump (see attachments).
    Both cases worked successfully after uninstalling Remix.

How do you reproduce the bug?

Set up the latest version of DXVK and Bridge Remix on an affected Unity 4 title.

What is the expected behavior?

The runtime should be able to open up the game as expected. I will update this ticket when I find the specific version where this regression happened.

Version

DXVK a99f246-641; Bridge 8248167-93

Logs

Shadowrun Remix Logs.zip

Crash dumps

2024-09-12_103040 (Shadowrun Crash Log).zip

No Remix crash dumps for now-- something has changed with how VS2019 opens applications on my end and the application is closing and restarting before running, breaking the debug. If I can correct this I will add the logs in an edit.

Media

No response

Start by reproducing the startup failure with DXVK a99f246-641 and Bridge 8248167-93 on the listed Unity 4 titles. Read Shadowrun Remix Logs.zip and the attached Shadowrun crash dump, then investigate the runtime path implicated by the access violation. Done means affected titles open and reach their expected startup or main-menu state.