[Autocomplete] options list keeps jumping/scrolling back up when disableCloseOnSelect and multiple is set

[danielkalen]

When you have a multi-value autocomplete component and have also set the disableCloseOnSelect, a weird jump/scroll back to the first selection occurs.

• The issue is present in the latest release.
• I have searched the issues of this repository and believe that this is not a duplicate.

Current Behavior 😯

When multiple and disableCloseOnSelect are set to true, upon selecting new options in addition to previously selected options the scroll box of the options list will jump/scroll back up to the first selected option.

Expected Behavior 🤔

The list's scroll state should remain exactly as is and should not scroll back up upon selection.

Steps to Reproduce 🕹

I went to the Autocomplete demo docs and have forked the multiple-values demo section.

Demo:
Codebox link: https://codesandbox.io/s/material-demo-weo4b

Steps:

1. Go to Autocomplete demo docs
2. Scroll down to multiple-values section, fork the example in codesandbox.io
3. Add disableCloseOnSelect to one of the autocomplete fields
4. Add mutiple selections and watch how the lists jumps back to the first selected option.

Tech	Version
Material-UI	v4.8.0
React	v16.11.0
Browser	Canary Latest

[oliviertassinari]

Thanks for reporting this regression, #20315 was meant to solve it but it seems it didn't far enough.

[oliviertassinari]

Actually, #20315 wasn't released yet.