Created attachment 122527 [details] example see the attachment
Can't confirm on: * Version: 5.1.0.2 * Build ID: 10m0(Build:2) * CPU Threads: 4; OS Version: Linux 4.4; UI Render: default; * Locale: it-IT (it_IT.UTF-8) * OS: openSUSE Tumbleweed (20160117) (x86_64) * Version: 5.1.0.3 (x64) * Build ID: 5e3e00a007d9b3b6efb6797a8b8e57b51ab1f737 * CPU Threads: 1; OS Version: Windows 6.1; UI Render: default; * Locale: it-IT (it_IT) * OS: Windows 7 Professional SP1 x86_64
Enrico: maybe far-fetched, but could you try, if disabling this helps: Tools - Options - LibO - View - Use OpenGL for all rendering Set to NEEDINFO. Change back to UNCONFIRMED after you have provided the information.
*** This bug has been marked as a duplicate of bug 96300 ***