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Firefox crashes a lot but mostly when opening a popup.

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Crash ID: bp-b76777b6-9f4a-4ad3-9602-907b00200720

Firefox crashes a lot but mostly when opening a popup. Tried Safe Mode and it works a little better but still eventually crashes.

Crash ID: bp-b76777b6-9f4a-4ad3-9602-907b00200720 Firefox crashes a lot but mostly when opening a popup. Tried Safe Mode and it works a little better but still eventually crashes.

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Thank you for the report ID and sorry to hear about the crashes. The signature

RtlpFreeHeap | RtlpFreeHeapInternal | RtlFreeHeap | rtsultramonhook.dll

includes a file from Realtime Soft's UltraMon program. That doesn't necessarily mean it is incompatible with Firefox 78.0.2, but that is one possibility.

Your report also mentions Malwarebytes Anti-Exploit and Webroot running, so maybe there is some multiple-program interaction issue???