Middle-click behaves incorrectly

1. Move the mouse pointer to an empty area of a help page and press down the mouse wheel. (press, not turn)
   A new, empty page will open.
2. Do the same on a link in a help page.
   Nothing happens.

This doesn't seem to make sense. I think Creator should:

• do nothing when middle-clicking an empty area
• open the link as a new page when middle-clicking a link