Downgrading just libgtk2.0-0 to 2.16.1-0ubuntu3 is enough to solve the problem, so, looks like as this could indeed be some change in the client side code.
Downgrading just libgtk2.0-0 to 2.16.1-0ubuntu3 is enough to solve the problem, so, looks like as this could indeed be some change in the client side code.