I know I’m not the one the request was directed to, but I’ve attached my log anyway. What I did to produce it:

1. MOZ_LOG="WidgetScreen:5,WidgetWayland:5,Widget:5,WidgetPopup:5" /usr/bin/firefox >log.txt 2>&1
2. opened the Wikipedia article for Firefox
3. powered off both my monitors, then powered them back on
4. tried right-clicking many of the links on the page
5. quit Firefox