F40 on Wayland (logged in maybe once or twice with GNOME on X). Initial install was with F39. With the system upgrade to F40, I had to set the graphics renderer (env variable) to gl instead of the (back then) newly introduced ngl (action also suggested by the GNOME team for older graphics cards), because of some artifacts in GTK4 apps. Now with F41 and vulkan I have seen here some other reports regarding issues, but with GTK4 apps not starting on machines with hybrid graphics (not my case). Probably unrelated though.
Against which component should the bug be reported?