Cosmic becomes unresponsive using Steam

[julianbraha]

The bug:

Every time I hover over my username in Steam, my system freezes and becomes completely unresponsive (e.g. cursor doesn't move, keyboard shortcuts don't do anything).

Debugging info:

This doesn't happen in KDE Plasma 6.2.1, so I think it's specific to Cosmic.

I tried running sudo dmesg --follow in a terminal, as well as the bottom resource monitor in another terminal while reproducing this error, but dmesg doesn't show any useful errors, and the resource monitor doesn't show any spikes (see screenshots below).

Notice that the dropdown menu that should open when hovering over the username, doesn't render correctly, and is an opaque black box.

My system:

Hardware

• Framework Laptop 13
• AMD Ryzen 5 7640U
• 32gb DDR5 @ 4800 MT/s, CL34
• SK hynix Platinum P41 2TB

Software

• Operating system: CachyOS
• Kernel: 6.11.3-3-cachyos
• Graphics driver in use: amdgpu

Photos, since the system is too unresponsive for screenshots to work:

[julianbraha]

Update on this:

When I open Steam by running in a terminal (Alacritty): cosmic-comp steam, the issue doesn't happen at all. The username dropdown renders as expected, and there is no system freeze.

But when I open Steam by clicking on the desktop icon, or running in terminal steam, this issue continues.