[Bug 1987976]

[Lissyx+mozillians]

(In reply to Alan Jenkins from comment #20)
> > It seems not to happen if instead of the "firefox" launcher binary, I run "firefox-bin" directly. What's the difference?
> 
> Nevermind. I think it can happen with either. It's just a bit random whether it happens or not.

Just to clavify, you reproduce with both Snap and tarball downloaded from mozilla.org ?
Can you share `about:support` ? Can you verify with `MOZ_ENABLE_WAYLAND=1 firefox` if the issue disappears?

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https://bugs.launchpad.net/bugs/1987976

Title:
  firefox black window

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