I don't expect anything anymore from GTK given it's current track record. The latest issue I discovered was the 'letter' to filename shortcut you used to have in file dialogs. It now triggers recursive search instead. Incredibly irritating, especially when used with large and/or FUSE directories, even considering there's a one line patch to allow customization though dconf which has been ignored since more than one year.

GTK 3 has been downhill usability-wise for me. One of the primary reasons I've stopped as a developer to use it entirely.