https://bugs.winehq.org/show_bug.cgi?id=48382
--- Comment #5 from jet_web@gmx.at --- well, it seems there's some missinterpretation...
what I actually tried to explain, my own TB 58.x profile worked OOTB with the mozilla downloaded TB 68.3.1. only thing I'd to do was deleting "pkcs11.txt" (and "key3.db" & "key4.db" too just to be on the save side) from the profile's root-folder, as TB wouldn't/couldn't use the stored account passwords anymore. after then ofc I'd to retype all needed account PW's once, but since then TB is running smoothly in my UB18.04.3 enviroment.
TBH, I'm way to lazy to dig deeper into the situation, so WORKSFORME is good enough right now. will give it a try again when WINE 5 final comes out, but no sweat.