Here's some unexpected behaviour. The two pairs of measures look identical, but play back differently, after a few steps you could easily perform by accident.
Wouldn't it be nice if changing a note that continues or concludes a tie simply deleted the tie or caused it to appear different, to warn you that Finale does not consider the two notes to be tied? We would have far fewer confusing cases that are tedious to find and correct (also see this thread and this thread).
(v. 25.5, Windows 10 x64)