Hey Steffen K. so I can see you've got a style applied to the text, "text-size-medium 7" - I'd suggest removing that style on all the questions and see if it gets worked. My guess is you've got some kind of wrapping style applied on the text style which is forcing the overflow.
If you want to apply a specific style to the text you can do it in the faq question class, or simply use a regular text style that you know will wrap.
Hope that helps!