Is firefox broken?
Is firefox broken?
It's also happening to me. The app usually stops working after I close Firefox, which is strange and shows an error message screen. Have you tried launching it in safe mode? Does it still crash there? If not, it could be a theme or plugin issue. Consider disabling hardware acceleration—it's helped in past Firefox versions.
I experienced this problem where closing a tab results in empty space remaining, either briefly after closing or until another tab is selected. I also noticed other issues when opening links, which I suspect are linked to changes in the advanced settings.