https://bugs.winehq.org/show_bug.cgi?id=49809
--- Comment #5 from subgraph93@gmail.com --- I just upgraded to Firefox 82.0 and noticed I can no longer reproduce the issue. (Though might have been some other change instead.) I still have the same "problematic" extensions installed. The white screen with dev tools enabled is still an issue, but I think it's a separate one.