[Bug 1974079] Re: Firefox and Thunderbird fail to open after recent updates

[JohnnyC1951]

I have this exactly as described affecting Thunderbird & Firefox. All Mozilla remedies do not work.
System Info:
Ubuntu 20.04 LTS
Firefox 100.0 (64 bit)
Thunderbird 91.8.1 (64 bit)

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Title:
  Firefox and Thunderbird fail to open after recent updates

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