Black Boxes Around Transparent Objects/Textures

[withered-rose]

Describe the bug
When running a compiled Windows build of Render96ex through Proton on Steam Deck (Linux), certain objects that use transparency (such as HUD, dust particles, Peach's letter, shadows) do not render correctly, lacking any transparency at all and having black or white boxes around them. If I copy this exact same build folder onto my Windows PC, the game renders correctly.

To Reproduce
Steps to reproduce the behavior:

1. Compile render96ex using sm64pcbuilder2
2. Copy the build folder onto the Steam Deck
3. Add the exe file to Steam as a non-Steam shortcut
4. Set the compatibility tool to GE-Proton8-25
5. Launch the game through Steam

Screenshots

Desktop (please complete the following information):

• OS: Steam Deck OS (Arch Linux)

[withered-rose]

So... this is still occurring. I've tried other builds of Proton and GE-Proton, and there's no change. Does anyone know what causes this? Has anyone else even experienced this same issue? Any comments would seriously be appreciated.