I recommend upgraded to this version. Just a small css issue if the widget option was not selected and you tried to make a widget. This should do it. Everything works as intended. If your options were selected properly it would not matter
I also recommend upgrading your xenforo version to xenforo 2.1.8 patch 2 as there was a bug with xenforos software in xenforo 2.1.8 and 2.1.8 patch 1 with template modifications not being applied.