Color Picker window won't close

[Mixylplyx]

These are the steps I did to create this problem:

Go to Images and Maps
Create a new image
Click on Layers
Click on Color Picker
With Color Picker window still open, close the image
Color Picker window remains and cannot be closed

[Moon Wizard]

Thanks for reporting. I've recreated this issue, and filed it as FGU-723.

Regards,
JPG