Hi Olga, it turns out that Ctrl+M is a kind of ancient special code for "Enter", and by default Windows tries to generate an enter keystroke when you push it. You can see this for example if you open up Notepad and then type Ctrl+M - it will have the same effect there as pushing Enter.

In MoI pushing Enter is equivalent to pushing a "Done" button if there is one showing, or if not then repeating the last command, so that is the explanation for what you ran into here.

For the next v2 beta I have fixed this up so that when you have a shortcut defined for Ctrl+M, it will override this default behavior and not treat it as an enter key.

Thanks for reporting this bug!

- Michael