Bug? EnterPressed and java.lang.Exception: Sub was not found.

Hi all, I may have found a problem. When you use the EditText's EnterPressed, and you have a MsgBox2 with its choices, if you press any button you will have this error: java.lang.Exception: Sub was not found. You have this error only in legacy debug and release, not if you run rapid debug.
I have uploaded a little sample.
What's wrong?
Thanks to all
Federico

It should be:

Thanks Erel, now it works correctly!