Investigate ? Why ?
Either you found a problem and submit a bug report.
Or you suspect you have done something wrong and explain.
But please, don't consider forum member to be at your orders.
Have a nice day.
No intention re "orders" - its a general bit of information to see whether others are experiencing the same issue or whether this may be isolated.
Issue has been filed on radar (as are most). Since the colorpicker is an OS level applet, its not simple a point to raise as an Xcode specific issue (hence raised on the forum).
Good you filed a bug. You could post its ref in case anyone needs.
Have a good day.