I have this example
https://codesandbox.io/s/react-select-v5-sandbox-forked-c0rzsm?file=/example.js

the main configuration for this select is (I need each of them)

isMulti
closeMenuOnSelect={false}
menuPosition="fixed"

The problem is - I select several options and control height increases but the menu is not moving bottom with control bottom line.

If I have menuPosition="absolute" everything is fine but I can not use it because this select can be in the parent with overflow: auto and it will overflow my select menu

I have only one solution - pass a new key to MenuPortal component when the select value is changing but it causes performance issue with the long list and the main problem - React will re-create the component because of new key property and if I scrolled down - scroll will be returned to the start position

And the most interesting thing - Before 5.5.0 -> we had an issue that when I had fixed menu -> it did not scrolled with the control but now it is fixed and scrolling down in the example forces menu portal position and its going to the right place