Comment 103 for bug 1987976

On 2023-05-19 18:45, Angel D. Segarra wrote:
> On 23.04 I still get a black window on first firefox start with the
> proposed mutter update.

Please note that installing the mutter binary package is not sufficient. I suspect that you need to do:

sudo apt install libmutter-12-0/lunar-proposed gir1.2-mutter-12/lunar-proposed

(and relogin)

Please try that and let us know if it helps.