Bobo's Big Tower has visual glitches and game breaking bugs when running through gamescope

[SelfDestructor]

Is there an existing issue for this?

• I have searched the existing issues

Are you using any gamescope patches or a forked version of gamescope?

• The issue occurs on upstream gamescope without any modifications

Current Behavior

The game Bobo's Big Tower has odd visual color glitches when moving through a door from room to room and sometimes the camera view will overshoot the next room when moving through a door, leaving the game in a soft locked state where you are unable to move or progress. This only happens when the game is running through gamescope.

Tested on desktop and handheld.

Steps To Reproduce

1. Launch the game on desktop with gamescope -- %command% / Launch the game normally through Steam Game Mode
2. Start the game and move back and forth through a door to switch rooms.

Visual glitches always happens at room transitions, runaway camera only happens sometimes.

Hardware information

PC 1:
- Distro: Bazzite 44.20260430.0
- CPU: AMD Ryzen 9 5950X
- GPU: AMD Radeon 7900 XTX
- Driver Version: MESA 26.0.5

PC 2: Asus ROG Ally X
- Distro: Bazzite-Deck 43.20260420.0
- CPU: AMD Ryzen Z1 Extreme
- GPU: AMD Ryzen Z1 Extreme
- Driver Version: MESA 26.0.4

Software information

PC 1:
- Desktop environment: KDE 6.6.4
- Session type: Wayland
- Gamescope version: 3.16.19-45-g7c5ebe9+ (gcc 16.0.1)
- Gamescope launch command(s): gamescope -- %command%

PC 2: Asus ROG Ally X
- Desktop environment: Steam Gaming Mode/KDE 6.6.4
- Session type: Steam Gaming Mode/Wayland
- Gamescope version: c31743d+ (gcc 15.2.1)
- Gamescope launch command(s): N/A - launched directly via Steam Gaming Mode

Which gamescope backends have the issue you are reporting?

• Wayland (default for nested gamescope)
• DRM (default for embedded gamescope, i.e. gamescope-session)
• SDL
• OpenVR

Logging, screenshots, or anything else

No response

[matte-schwartz]

I'm trying to reproduce this on SteamOS with my ROG Ally X and on CachyOS with my 7900XTX, and so far I still haven't seen any glitches yet on either one. What Proton version are you using?

[SelfDestructor]

I've tested 8.0-5, 9.0-4, 10.0-4 and 11.0 (Beta).

I downloaded the cachyos fork proton-cachyos-11.0-20260428-slr-x86_64 to give it a test and it happens with it as well.

I'm attempting to post a recording of the visual glitch. Hopefully it shows up below.

[matte-schwartz]

hmm, interesting that you're able to capture it in a screen recording. thanks for the visual, I'll try poking at it a bit more later.

[SelfDestructor]

I have tested the game on 2 more computers and it happens on both.

One is a laptop with an Nvidia GPU and the other is a laptop with an Intel CPU using the integrated GPU.

I don't have to launch the game with gamescope for it to happen on both of these laptops which has me really confused... Maybe it's not a gamescope only issue?

The HP has a fresh install of CachyOS.

PC 1: Razer Blade 14 2023

• Distro: Bazzite-Nvidia-Open 44.20260501.0

• CPU: AMD Ryzen 9 5900HX

• GPU: Nvidia GeForce RTX 3070 Laptop

• Driver Version: Nvidia 595.71.05

• Desktop environment: KDE 6.6.4

• Session type: Wayland

• Gamescope version: 3.16.19-45-g7c5ebe9+ (gcc 16.0.1)

• Gamescope launch command(s):

PC 2: HP EliteBook 820 G2

• Distro: CachyOS

• CPU: Intel Core i5-5300U

• GPU: Intel HD Graphics 5500

• Driver Version: MESA 26.0.6-arch2.2

• Desktop environment: KDE 6.6.4

• Session type: Wayland

• Gamescope version: 3.16.23+ (gcc 15.2.1)

• Gamescope launch command(s):