Try to vertically tile / maximize gedit window. Then move focus to other window and then back to gedit. I tried to fix that and got new problems.
It is not simple fix - there is reason why ubuntu started to patch gtk+ and other things to get it working, most likely it was easier then getting proper csd support in compiz.
And you are thinking wrong - gtk+ does not have any offending commits. It is compiz problem / bug that requires proper fix...
I said - might not do right things...
Try to vertically tile / maximize gedit window. Then move focus to other window and then back to gedit. I tried to fix that and got new problems.
It is not simple fix - there is reason why ubuntu started to patch gtk+ and other things to get it working, most likely it was easier then getting proper csd support in compiz.
And you are thinking wrong - gtk+ does not have any offending commits. It is compiz problem / bug that requires proper fix...