Since the Android 10 update on my Samsung Galaxy S10 Plus, the full screen gestures, back, doesn't work properly with the keyboard.
I'm using SwiftKey and when I tap and hold the dot to reveal ?-! and also when I tap and hold enter key it won't reveal emojis... The issue is in the back navigation bar only, only that side, home and recent apps buttons are fine.
Unfortunately with new full firmwares bugs can still present themselves @Adem0
If this was my situation I'd contact the developer of the app and send them a bug report.
My advice comes from being a UK Samsung Phone Owner.
I have no affiliation with Samsung.
Current Phone ~
Samsung Note 10 Plus 5G _256Gb >_ Samsung One Ui 2.5/ Android 10.
I found in the swiftkeyboard app, when you set the size and position of the keyboard if you raise up from the bottom of the screen a touch you then miss the area that envokes the back button. Not an ideal solution if you max realestate for messaging but it should stop the " I'm gonna throw this thing across the room" feeling
I'm french, sorry for m'y english.
I've a S10 plus and since update one UI 2.0 I've same problem with my keyboard swiftkey.
I hope this bug Will Be fix asap.