(On 2020-03-12 3:25 PM, Ed wrote)
...I don't even recall if a real reason was determined for your
particular issue with t-bird.
Not that I know of. My best guess: The f29->f30 upgrade included the
Thunderbird full version upgrade. I think Fedora held up the
Thunderbird upgrade (did not include it in f29 patches) deliberately,
though I don't know why. Just a guess.
I recall at that time searching Thunderbird support, and seeing that
others did have similar problems with that Thunderbird upgrade. But
that discussion was there, not in this list. I was not a part of that
discussion.