artifacts shown at the button of maximized terminal after minimizing another window over it

Submitted by Pacho Ramos @pachoramos1

Link to original bug (#621902)

Description

Created attachment 163930 1.png

I suffer this problem since upgrading from 2.28 to gnome-terminal-2.30.1. To reproduce, follow these steps:

1. Open a gnome-terminal
2. Maximize its window
3. Open a different app and also maximize it
4. Minimize last window

-> You will see some artifacts appear the the button of maximized gnome-terminal window because of metacity minimize effect (see attached screenshot)

Thanks for solving this

Attachment 163930, "1.png":

Resolution: RESOLVED FIXED