when you move window,the focus will not focus on mate-polkit

[HuangZhiquan]

for example:
1.open launage-setting(anyone need authenaticate)
2.click "apply the whole system"
3.popup mate-polkit window,the focus on the gtkentry
4.cancell
5.move the window of launage-setting
6.do as step 2-3
7.the focus will not on mate-polkit
i donot know how to deal with this bug

[monsta]

Looks related to mate-desktop/marco#117