To reproduce:
1. Open attached workspace, friendfunc.vpw (expand friendfunc.tar.gz) in a clean configuration
2. In friendfunc.hh line 5, highlight myMember and press Ctrl+/ to find all references
3. Now go to friendfunc.cc, line 9, highlight "myFriend" and press Ctrl+/ to find all references
4. Repeat steps 2 and 3 over and over again until references stack is full
5. Eventually you will see references tree not expanding for both reference searches, see attached screenshots
I'm using Linux x64 beta1 on Centos 7.2