GtkScrollbar warning "How does the code know the size to allocate?"
Submitted by Gerald Nunn
GTK3 on Arch was upgraded yesterday to 3.20.8, ever since then my application Terminix has been issuing the following warning to the console whenever I resize the window:
(terminix:6853): Gtk-WARNING **: Allocating size to GtkScrollbar 0x15c65c0 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate?
I noticed that bug https://bugzilla.gnome.org/show_bug.cgi?id=765700 seems somewhat similar and I've tried commenting out the style and provider I add to the scrollbar to see if it made a difference but no change.