New Facebook Messenger Popup Does Not Work With Theme?

[ProdigyKyo]

Hi I installed a new theme on my Mi Note Pro. I have authorized the app to allow pop up for facebook already. It works on the normal UI theme. But after I change themes ( no matter which theme ) the facebook pop up disappears almost as if it is hiding behind the theme. The pop up is active if I use the scroll down bar from top and open it. However, when I press the circle of the facebook messanger icon again it fades away. Normally, it will close it and the circle will remain on the screen (because its a pop up) but it doesn't and it just fades away like behind the theme or something. Anyone know how to fix this?