steamwebhelper keeps crashing on Fedora 40 unless Steam is started via the terminal

[SamusAranX]

Your system information

• Steam client version (build number or date): 1726604483
• Distribution (e.g. Ubuntu): Fedora 40 KDE
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD, AMD Radeon RX 7700S/AMD Radeon 780M

Please describe your issue in as much detail as possible:

The device is a Framework Laptop 16 with the graphics module connected.
I installed Steam by running sudo dnf install steam. If I start it from the KDE start menu, it repeatedly tries and fails to spawn a window.
The first time this happened, I got a fancy dialog about steamwebhelper having crashed, but for some reason that dialog's not popping up anymore.
If I start Steam from the terminal by simply running steam, it works flawlessly.

Steps for reproducing this issue:

1. Install Steam from the rpmfusion nonfree repository
2. Try to launch it from the start menu or the closest equivalent
3. Watch as it endlessly tries and fails to spawn a window

[kisak-valve]

Hello @SamusAranX, this issue is already being tracked at #9383. Closing as a duplicate.