With the new UI, I have noticed the addition of undo button every time we long press on the text box which serves almost no purpose to the user. Primarily users look for the paste or select all option. In the previous version the paste option was on ...
There is a backspace button in the samsung keyboard to serve that purpose. If we want to remove multiple characters we can just do select all and then press backspace or we have the liberty to highlight what is not needed and then press backspace.