Copied thunderbird directory from Manjaro to Mint and Thunderbird on Mint gave this lovely message!
No a newer version did not make changes...at least not according to you! As you can see both Thunderbirds report their version as 68.7.0
Manjaro
Linux Mint
I really like and have tried to like Manjaro even when there were plenty of problems. But Mint based on years of reliability is what I can rely on. I basically can bounce back to Mint if I find a show stopper on Manjaro, except for one thing...Thunderbird. Right now I can't move Manjaro's Thunderbird back to Mint. I need to look at Manjaro's downgrade which I think I used before.