Just a quick thought. I'm running
gtk3-3.22.0-2.fc25.x86_64. I just run
Sugar, a heavy user of the Gtk+ theming system. Usually, now is when I
submit a patch to port over some of the changes to the themes.
This cycle, the Gtk+ contributors had been saying that the theme api was made stable in gtk 3.20. And hell yeah - they are right. I was thinking of putting some pictures to show you just how it is exactly the same - they got perfect compatibility! But showing pictures would be a waste of bandwidth!
Comments, thoughts? Mail them to firstname.lastname@example.org. I would love to hear them!