Your system information
Steam client version (build number or date): 1757650573
Distribution (e.g. Ubuntu): Debian 12
Opted into Steam client beta?: [Yes/No] No
Have you checked for system updates?: [Yes/No] Yes
Steam Logs: [generate by running this command in a terminal tar -zcvf ~/Desktop/steam-logs.tar.gz ~/.steam/steam/logs] Not relevant
GPU: Nvidia/Intel/AMD Nvidia RTX 3050

Please describe your issue in as much detail as possible:
Since the update of September 17th (Build 20022951), "Fullscreen" is not available anymore in the list of display modes in Counter-Strike 2. It is only possible to select "Windowed" or "Windowed fullscreen". "Fullscreen" is not present in the list anymore. The issue persists with the newest NVIDIA drivers and after a reinstall of Debian 12. If I select an older version of the game, older than 1.41.x.x, "Fullscreen" is still present.

Steps for reproducing this issue:

• Start Counter-Strike 2.
• Go to the video settings.
• Go to video.
• Try to change display mode, notice that "Fullscreen" is missing from the list.
• Start an older version of CS2 (e.g. 1.40.9.6), in any case before 1.41.x.x.
• Notice that "Fullscreen" is still present in the list.