Enthuware

If one chooses not to show number of options in Leitner mode, and picks more options in a single-option question, the evaluation doesn't show all options picked by the user, just one (random?) of the invalid ones.

I think this is a bug, and an important one, as the user is presented with a distorted feedback.

Yes, you are right. That is a problem. We are looking into it. BTW, did you check my private message that I sent to you on this site?
-Paul.

This issue has now been fixed in the latest version 3.78.
-Paul.