Color picker widget auto-closes unnecessarily

A licensee reports that the color picket widget in Unreal Editor closes whenever a blueprint actor (map placed instance of an actor blueprint) receives a property changed event, even if the change event didn’t affect the dependency (target color property) of that actor. They report this as a UX problem, and would prefer the color picker widget to stay open and interactive.

They point out that CL 52639755 added window closing logic that is intended to close the picker on actor reinstancing, but that (according to the licensee) is triggering incorrectly when the actor reruns its construction scripts but without reinstancing.

1. Open the attached project

1. Select the ColorPickerTest actor in the ColorPickerTestLevel

1. In the Details panel, click the Test Color value to open the color picker

1. Click one of the controls in the color picker to change the color

1. Observe that the picker closed