[KKS_VR][KK] Suddenly stopped working properly with steamvr 2.15.6

[jmfergeau]

Describe the bug
Since steamvr 2.15.6, the plugin doesn't work properly. The main game window appears in 2D and the main menu doesn't appear anymore in 3D, no matter how buttons are pressed, making the game unplayable at all. Usually, between the time the 3D appears and the main menu appears, you can see a glimpse of the controllers before they're replaced by the hands. They don't appear anymore either, only showing the hands.

Expected behavior
No 2D window should appear once the game is launched in 3D and the main menu should be accessible in 3D.

To Reproduce
Steps to reproduce the behavior:

1. Use steamvr 2.15.6 and KKS_VR 2.5
2. Start koikatu.exe with steamvr
3. Wait for it to load
4. See the same thing as in screenshot below

Screenshots
This is what happens when the game is launched. The game window wants to appear in 2D and, in 3D side, the main menu doesn't appear. No buttons make it appear anymore. (Also, the bepinex loading window appears smaller than usual when the problem is about to occur)

Additional information
This information will make finding and fixing the bug much easier.

• OS: Linux (Bazzite, fedora-based, using GE-Proton10-32)
• steamvr 2.15.6 and KKS_VR 2.5. Doesn't seem to happen with previous available steamvr version. (2.12.14)
• output_log.txt

[obedientGolem]

Still works on windows. So it might be a linux problem.

[jmfergeau]

After going back to arch, the problem still persists but acts differently.

It's still doing it, but I can prevent it if I click the mouse on the KK window before the splash and main menu appears. If I do, everything will work like before. If I don't, the main menu will refuse to appear in VR but the player hands will be visible.

Might be related to Wayland as it has some weird shenanigans with focus... But I only got this specific problem with KK.