It would be awesome if there is a way how to upgrade / multislot current GTK 3.8 with GTK 3.10 or newer.
GTK 3.10 contains a lot of widgets that are used in applications:
GTK 3.12 would bring support for high DPI displays.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.