hello, maybe that's an issue with hardware acceleration - first please try updating your graphics driver, or in case this doesn't solve the issue or there is no new version available at the moment, start firefox into safemode by pressing the shift key while the application is launching & disable hardware acceleration in the firefox menu ≡ > options > advanced > general (that setting will take a restart of the browser to take effect).

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

suspect that this is related to the fact that you have an old driver version for an Intel HD Graphics 3000 card as suggested by philipp when I reported the same problem

please refer to the following for possible solution

https://support.mozilla.org/en-US/que.../1025621#answer-640968

I have this same problem and its not a driver issue. I am not the only one either. It looks like a ton of other people have the same problem. So no Firefox for me now. I had some problem with blank video and uninstalled and reinstalled this latest version. What a load of horsesh*t