Help!!!

This is an ongoing issue for me and others....I've also heard this is affecting Huawei phones too...I have an S9

The issue: during a call (inbound or outbound) the keypad does not recognise/accept me pressing the numbers...

EG the automated voice at a call centre says "press 1 to select this option" - I press 1 and nothing happens - i actually get a "bleep" tone when i hit 1 but it doesn't register and the automated voice just repeats its message until i get fed up of pressing 1 multiple times....