Full screen immersive on Kitkat and above devices bug in 4.19?

So I’ve noticed that when I deploy the app to my phone initially the full screen mode works good. However, if I reload the app (i.e. not an initial deployment), the phone UI gets stuck on display. The only way it seems to fix this is if I pause the app and resume it.

Obviously, I want the player to still be able to access the phone UI but, it should disappear after a few seconds. I feel as though with it not disappearing that it is a bug with Unreal as I see under the Project Settings that there is a Boolean to allow for full screen mode. (It is checked in my project settings)

If this has been solved already, can someone give me the workaround to this problem?

Hello,

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Thanks