Radio buttons in treeview show wrong value when scrolling

Submitted by BugsBunny

Description

After radio buttons are programmatically changed in a treeview, when I scroll down (or up) the next two radio buttons which appear look like they have the wrong value set. If I hover over them with the mouse or scroll them out of view and back into view, the value is correct.

Screencast: https://filebin.net/674g6ne1pmosj94c/rt_4100.mp4

Code: https://github.com/Beep6581/RawTherapee/blob/dev/rtgui/preferences.cc#L146

Original issue: https://github.com/Beep6581/RawTherapee/issues/4100#issuecomment-331727526

Reproduced in GTK+ 3.22.16 and 3.22.19.

Version: 3.22.x