Hello,
I am using Flashcards Deluxe 4.53 on macOS 13.3.1, and for the most part it works great. The one issue I am having is that I can disable Smart Dashes under Edit > Substitutions, but it turns back on as soon as I go to the next card.
I went to System Settings > Keyboard > Input Sources and turned off the option to "Use smart quotes and dashes," then restarted my MacBook, but that didn't help.
I think this issue may be specific to Flashcards Deluxe since I checked a couple other apps (TextEdit, Pages, iA Writer) and they show Smart Dashes turned off.
Any help would be appreciated.