Created attachment 118236 [details]
Image of bug
When I click on the marked area the system crash and I have to end session
Well, there are couple of bugs involved here, in particular: Bug 78111, Bug 93290, Bug 93145. What you need to do is:
1. Make sure you have libreoffice-style-galaxy and libreoffice-style-tango packages installed.
2. Upgrade to 5.0.1.
*** This bug has been marked as a duplicate of bug 78111 ***