Login animation still occurs before wallpaper is loaded
In !1368 (merged) I attempted to delay login until after the user's wallpaper has been loaded. It seems to work always in my Fedora VMs, but I saw the bug twice last week in a GNOME OS VM (running nightly gnome-shell!), and I can still reproduce about half the time with 3.36.5 on my laptop. So the bug is not fixed after all.