Nice Menu drop down box size

Hello,

I would like your help on the following problem. Please see screenshot

I have a problem with nice drop down menu. As you can see on the screenshot on the category "training and courses" on Social media Training the word training moves to the box below. This happens with multiple categories and different words and there is no option to re-adjsut the box size. I suspect this is a bug as it should re-adjust automatically based on the keywords?

I would love to have your help as I have managed to solve on my own most of this template's issues apart this one.

Thanks in advance