Cannot change "apps appear on top" status

[AC Question]

I have a galaxy s5 running andoid 6. I nees to disable the overlay feature but whenever I change the status of "apps appear on top" from enable to disable or "apps with permission" it automatically changes back to enable.

 

[Javier P]

Welcome to the forums. Several users managed to fix a similar problem after they uninstalled Clean Master or other apps by Cheetah Mobile. Do you have any CM app installed your phone?