Two Users and Groups settings-Ubuntu_Mate 15.10

Hi:

Thanks for the great work put-forth by Ubuntu-Mate team in this 15.10 edition.

Am not sure why Menu has two different Users and Groups account settings buttons/panel.

one of them has permanent defect-- that is it does not resize to allow for OK button.

Whether it was opened alone or at the same time with the other one "which may cause conflict while changing users settings"

Both panels has the same name "Users and Groups". So am not sure how to clear one of them.