Why does the keyboard on my samsung s8 keep disappearing

[Android Central Question]

Why does the keypad on samsung s8 keep disappearing when i'm texting or writing an email or when i'm on line

 

[B. Diddy]

Welcome to Android Central! Could you be accidentally tapping the Back or Home button while typing? This tends to be easier to do by accident when a phone has minimal or no bezels.

 

[bandofbrothers2112]

Do perhaps accidentaly touch the on the far right on the bottom navigation bar ?