I have updated my s20 ultra to the new 3.0, which I am regretting doing for two reasons.

1) If I receive a Facebook messenger message and click into the app to read the message, on the "scroll down" notification bar, it still shows as an outstanding notification even though I have read it. This means I am constantly having to clear notifications. Does anyone know why this could be?

2) The new bubbles feature which replaced the old Facebook messenger chathead is nothing short of horrendous, due to its constant positioning up the top left of the screen (I am right handed and the s20 ultra is a large phone, so is pretty much useless to me), and also because when click on it, it doesn't take up the full screen size, which is very distracting.

Can anyone please help my sanity with the above / trying to get it back to what it used to be?