It started with this:
Image may be NSFW.
Clik here to view.
I grabbed the comment arrow and... the following happened.
In other words, if the lower right corner of a free label s hidden by another object, funny (or not, dependind how urgent matters are) things happen.
I personally think that belongs to the litany of bugs to be fixed with this new feature.
Tested in LV 2013 SP1 62 bits running on Windows 7 64 bits.