[General] - Certain SteamOS UI elements don't respond to input when a game is actively running.

[ZereoX]

Your system information

• Steam client version (build number or date): 1731433018 (Stable / Beta)
• Distribution (e.g. Ubuntu): SteamOS 3.6.20 / 3.7.0 (Deck) and Manjaro w/ Gnome 46 (Desktop)
• Opted into Steam client beta?: Yes. Stable and Beta are currently on the same release.
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD Van Gogh RDNA 2.0 (Steam Deck) and RX 7800XT (Desktop)

Please describe your issue in as much detail as possible:

While a title is actively running, various elements of the SteamOS UI don't respond to input (touch or mouse) preventing the user from interacting with them.

The following elements were found to not function while a game is actively running:	Element	In-Game	Steam Menu Open	QAM Open
Volume OSD	:x:	:x:	:white_check_mark:
Screenshot Notification	:x:	:white_check_mark:	:white_check_mark:
Header (Search, Network, Performance, Profile)	N/A	:x:	N/A - The ones within the QAM work

Video

https://github.com/user-attachments/assets/a1c7f9b8-03e4-4f6c-a4a3-51b9eed2896a

Steps for reproducing this issue:

1. Launch any title.
2. Adjust the volume using the hardware + / -, an OSD should appear.
3. Slide your finger across the volume OSD.
4. Press Steam to open the Steam Menu and repeat step #⁠2 and #⁠3.
5. Tap the Search (🔎), Notifications (🔔), Network (🛜), Performance (🔋) or Profile (User Avatar).
6. Press Steam to close the Steam Menu.
7. Press Steam + RB.
8. Tap the Screenshot Taken notification.

Reproduction Rate: 5/5

Affected Platforms

• LCD / Jupiter: Yes
• OLED / Galileo: Yes
• Desktop Deck-like session (gamescope -e -- steam -gamepadui -steamdeck): Yes
• Desktop: Yes, in Big Picture Mode

Actual result

• Various SteamOS elements cannot be actuated via mouse / touchscreen in certain scenarios while a game is actively running.

Expected result

• SteamOS elements remain activatable via mouse / touchscreen in all scenarios even while a game is actively running.