Bugzilla

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #12)
> bug 1611372 might have helped a bit. If you can fix it by maximizing and unmaximizing, it's bug 1502519.

Oh, sorry, I meant "if a bug like this can be caused by maximizing, it's bug 1502519".

(In reply to monterro from comment #13)
> I confirm that just maximizing the about firefox window makes it render correctly.

> If I click on the windows key while the about firefox is misbehaving and select the firefox window and then switching again to the about firefox it will render normally.

If it's fixed with the next Nightly (build 20200418094905), we can close this as duplicate of bug 1611372.

(In reply to monterro from comment #10)
> I have come across the same bug on the main firefox window, basically it became all transparent during a youtube video, I could only see the firefox tittle bar that has the button to close the window and the youtube video progress bar.

That sounds like a different problem. If you see it again, please make a screenshot of it and try to open about:support, click on "copy text to clipboard", paste it into text file and attach both files to a [new bug](https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Graphics%3A+WebRender) report.

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #12)
> bug 1611372 might have helped a bit. If you can fix it by maximizing and unmaximizing, it's bug 1502519.

Oh, sorry, I meant "if a bug like this can be caused by maximizing, it's bug 1502519".

(In reply to monterro from comment #13)
> I confirm that just maximizing the about firefox window makes it render correctly.

> If I click on the windows key while the about firefox is misbehaving and select the firefox window and then switching again to the about firefox it will render normally.

If it's fixed with the next Nightly (build 20200418094905), we can close this as duplicate of bug 1611372.

(In reply to monterro from comment #10)
> I have come across the same bug on the main firefox window, basically it became all transparent during a youtube video, I could only see the firefox tittle bar that has the button to close the window and the youtube video progress bar.

That sounds like a different problem. If you see it again, please make a screenshot of it and try to open about:support, click on "copy text to clipboard", paste it into a text file and attach both files to a [new bug](https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Graphics%3A+WebRender) report.