The problem is that to clear the last element of ‘one’ i.e. ‘e’, I have to click multiple times.
The first time I click backspace it changed to ‘oneon’,
the second time - ‘oneo’,
third time - ‘one’,
forth time it stays - ‘one’
and then it works normally.
The problem is only happening in Android 8.1.0 phone but working fine Android 9 phone.