I have attached a screenshot for the understanding of my problem
capture.png
If you go to "show/hide all types" (I'm on solidworks 2014) it doesn't work?
Alas, no, but I think it's a bugg of my whole because after checking it doesn't do it to me on the others....
I'm also thinking about the bug. This sometimes happened to us with our old PCs, just restart SW for the problem to disappear.