Since I upgraded to from 16.04 to 16.10, gedit has strange new "feature": its background is totally transparent.
Where can this come from ?
Notice I'm using Unity and don't have any specific gnome package installed besides what comes by default.
Notice also that in 16.04 I used the Vivacious theme from ravefinity PPA, but I had to go back to Ambiance as Vivacious was broken in 16.10. Maybe it's related.
[EDIT] changing the 'Fonts and Colors' in gedit to any theme other than default (Kate, Solarized, Oblivion, etc..) solves the issue. So there must be a faulty gtksourview file in my home somewhare, but I can't find it...