oxygen-gtk3 broken with gtk3-3.15. See screenshots with oxygen-gtk3-demo. Reproducible: Always
Created attachment 90141 [details] oxygen-gtk3-demo
Created attachment 90142 [details] oxygen-gtk3-demo
Created attachment 90143 [details] oxygen-gtk3-demo
Created attachment 90144 [details] oxygen-gtk3-demo
Created attachment 90145 [details] oxygen-gtk3-demo
Created attachment 90146 [details] oxygen-gtk3-demo
Created attachment 90147 [details] oxygen-gtk3-demo
*** This bug has been marked as a duplicate of bug 340288 ***