At resolution of 3440 X 1400 with Calc in full screen, theme does not apply to the whole window.
Created attachment 164352 [details]
Theme is partially applied
*** Bug 135804 has been marked as a duplicate of this bug. ***
Created attachment 164353 [details]
*** Bug 138079 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 131023 ***