User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36

Steps to reproduce:

Just start Firefox and leave it alone.

Actual results:

Crashes after a random period - all windows spontaneously disappear.

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Do you have any crash logs from firefox (about:crashes) you can attach to this?

That was the first thing I tried, but all I get is "no crash reports have been submitted". I got it to crash again just now, with the same result.

Looking for a better fitting component, it might be core:js-ctypes, but not sure.

If it's not, ni me and I'll escalate it.

Sounds like this could be a dupe of bug 1509748.

It appears to be the same thing. Same messages about ntdll.dll

FWIW, I tried updating to firefox 76 last night - now it reliably crashes on starting. Also, the .msi installer appears to crash, leaving a partial installation. The .exe installer works OK.
Reverted to version 74 and it is much more stable.

Because this bug's Severity has not been changed from the default since it was filed, and it's Priority is -- (non,) indicating it has has not been previously triaged, the bug's Severity is being updated to -- (default, untriaged.)

The severity field is not set for this bug.
:jorendorff, could you have a look please?

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