There is a bug that strongly breaks usability: when I move Thunderbird Portable to another PC, it doesn't remember which folders has "Favorite" mark. Also, I have "Favorite" option set in View - Folders menu, but it resets to "All" on another PC. Some folders occasionally lost Favorite mark even when I move Thunderbird folder within 1 PC.
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[Bug] Favorite folders not saved when moving to new PC
March 2, 2023 - 6:23am
#1
[Bug] Favorite folders not saved when moving to new PC
March 2, 2023 - 8:23am
#2
Path Change
It would happen for both folder and PC changes as it's likely tied to a path change. I don't use Favorites myself in TB but I think I had fixed this a while back. I'd wager TB changed the way it stores them. I'll need to look into it as soon as I have time.