This wild guess is more for the RM support team than for the user community, but here goes anyway.
It is well known that RM uses a special collating sequence called RMNOCASE for its database columns which contain text data. There have been reports that the RMNOCASE collating sequence on a Mac is different than the collating sequence on Windows. See Sharing a File Between Mac and Windows
There therefore must be something different about RM’s RMNOCASE on a Mac and RM’s RMNOCASE on Windows. So I wonder if that difference is the root cause of the Unicode quotes causing crashes on a Mac.
Quotes are not characters that inherently have case as do letters of the alphabet. So it’s hard to picture why RM’s RMNOCASE would be involved in this problem. It’s just that the Unicode quotes problem is different between a Mac and a PC and RM’s RMNOCASE is different between a Mac and a PC and RM’s RMNOCASE deals with Unicode characters. And a collating sequence has to deal with all characters, not just letters of the alphabet.