f2e6798e66
It appears that GDK/glib will not run idle callbacks with a lower priority than HIGH_IDLE+10 *if* a new user input event is pending. This means that if mouse motion events are arriving and causing resizes of selected tracks, the call to ::redisplay_track_views() which is needed to update all the other tracks, will not take place if a new motion event arrives. Changing the priority to same as is used for the ::idle_resize() callback prevents new motion events from being handled before ::redisplay_track_views() is called.
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