Your system information

• Steam client version (build number or date): 1763795278
• Distribution (e.g. Ubuntu): CachyOS
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: Nvidia RTX 2080 (Driver 580.105.08)
• Desktop: KDE Plasma 6.5.3 (Wayland)

Please describe your issue in as much detail as possible:

steamwebhelper is using 100% cpu core but only when steam window is currently the primary window.
When steam window is not on top of other windows, CPU usage is normal.
Desktop is KDE Plasma (Wayland).
Enabling hardware acceleration doesnt help.
It does not happen when viewing store pages or other web content, only on this library page.

Steam is a primary window (high cpu usage):

Steam is not a primary window (another window is overlapping steam, normal cpu usage):

Steps for reproducing this issue:

1. Open Steam, go to Library view and select any installed game.
2. Make sure steam window is currently on top of other windows
3. Monitor CPU usage and observe 100% cpu load on a single core