After lots of years I finally got around to porting my widget GtkImageViewer to gtk3. After doing lots of reading of man pages, did I realize that i can turn off double buffering. I did it, and everything worked fine, except for one artefact. Once I turned it off, the scrolled bars of the parent widget GtkScrolledWindow, would no longer be shown.
Is this a bug? Or am I missing something.
Regards,
Dov