Unfortunately, I'm not able to reproduce the issue again using latest Nightly 101.a1 or Beta 100.0b2 on the same Win 11 machine. From my previously comment, I have installed and uninstalled a bunch of Firefox builds, that maybe somehow didn't trigger the issue anymore. I'll keep an eye on this anyways, and attach the zipped and HKCU and HKLM's keys, in case I'm hitting the bug once more.
Bug 1764672 Comment 5 Edit History
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Unfortunately, I'm not able to reproduce the issue again using latest Nightly 101.a1 or Beta 100.0b2 on the same Win 11 machine. From my previously comment, I have installed and uninstalled a bunch of Firefox builds, that maybe somehow didn't trigger the issue anymore. I'll keep an eye on this anyways, and attach the zipped files and HKCU and HKLM's keys, in case I'm hitting the bug once more.