Graphical glitches when moving mouse cursor to hamburger icon in headerbar

[heldderarbeit]

I'm on Arch, Gnome Wayland and installed AdwSteamGtk from Flathub (v. 0.6.11). When I move the mouse cursor to the hamburger icon in the headerbar, the profile icon rapidly changes back and forth to an "information" symbol (and the 3 icons right of it also glitch around). This is all happening just by leaving the mouse cursor on the hamburger icon, I don't have to manually move it to trigger this behaviour.

Screencast from 2024-08-14 08-59-36.webm