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Visual artifacts on macOS - FF 127.0

wolruf
Making moves

I started noticing such artifacts left on my macOS desktop, they belong to Firefox "Untitled windows" which cannot be closed. How can I troubleshoot further ?

I cannot focus on such windows, cannot close them.

about:processes doesn't seem show any tab opened (besides this one and about:processes)

Screenshot 2024-07-03 at 10.01.28.png

1 REPLY 1

wolruf
Making moves

update: this seems to have disappeared with either macOS 14.7 or Firefox 130.0.