I plug away at Q and A, and I know that the software is supposed to put a question mark at the end of a question and a period at the end of an answer. Yet, when I dont punctuate after a Q symbol, the default puncuation seems to be a period instead of a question mark.
Couple things to check. Go into User Settings, Paragraphs. Click Question, the Acvanced. Do you have Auto Punctuation checked? Uncheck it, if so. It's best not to have that checked for Qs and As. Check to see that Behaves as shows Question.
After making any changes, click Save Settings on the User tab in User Settings.
If that doesn't apply, call support or at the very least, post it on the Eclipse forum.