Have you also tried testing the phone in Safe Mode? This would disable all third-party apps and allow you to test the phone with only stock apps. While in Safe Mode, you should be able to access the More Options under the full screen gestures.
I recommend trying the app suggested by @Samsung_dcQjl4X. That is not a stock feature of the phone.
I'm having the same problem. I have to choose between navigation buttons and full screen gestures. I don't want EITHER.
The gestures are constantly activating when I don't want them to, which causes apps to close when I'm typing.
This is a hug annoyance and needs fixed ASAP.
yeah me either . When using keyboard on landscape . Im tryin to change the keyboar mode into chinese . But it always acdiently and hardly move to the recend apps. And when i watch video i want to skipp the next by drag the video cursor. It turnout make my ui move to recent apps. So anoyying .. and my home screen like often cant interact .