Fullscreen video turns screen into a strobe light

[gfaster]

Your system information

• Steam client version (build number or date): 1715635533
• Distribution:

OS: Linux 6.1.90, NixOS, 23.11 (Tapir), 23.11.6869.651b4702e27a
Host: ASUSTeK COMPUTER INC. STRIX Z270E GAMING
DE: Plasma 5.27.11 (Wayland)
WM: kwin
CPU: Intel i7-7700 (8) @ 4.200GHz
Resolution: 3840x2160, 2560x1440
GPU: NVIDIA GeForce RTX 2080 Rev. A (driver version 535.129.03)

# configuration.nix
programs.steam = {
    enable = true;
    gamescopeSession.enable = true;
};

• Opted into Steam client beta?: No
• Have you checked for system updates?: No - but new system
• Steam Logs: I have created them, but I am not willing to upload publicly - is there a direct upload portal?
  • I noticed in the webhelper.txt logs, WasHidden was oscillating rapidly on and off - changing ~320 times per second
  • in the steamwebhelper.log - there's a ton of AbortError: the play() request was interrupted by a call to pause()`
• GPU: NvidiaGeForce RTX 2080 Rev. A (driver version 535.129.03)

Please describe your issue in as much detail as possible:

On the steam store page for 4D golf, I tried to full screen the video and it locked up my screen and started strobing.

If a picture is worth a thousand words, I can only guess how many words a video is (WARNING: FLASHING LIGHTS):

https://github.com/ValveSoftware/steam-for-linux/assets/26206127/8dfcf08a-0467-4383-9f31-af48f9d178a5

• This occurs on both my monitors
• It's worth noting that I appear to be suffering from #9209 as well

Steps for reproducing this issue:

1. Fullscreen the trailer video on any game's store page