JS ERROR: TypeError: app is null in windowAttentionHandler.js
Just noticed this in the journactl, with 3.35.92 release:
gnome-shell[18844]: JS ERROR: TypeError: app is null
_init@resource:///org/gnome/shell/ui/windowAttentionHandler.js:60:9
_onWindowDemandsAttention@resource:///org/gnome/shell/ui/windowAttentionHandler.js:37:22