Current Behavior 😯

When I open a Select component vertical scroll bar of the page disappears.
See here

I don't have a demo to reproduce sorry, but I suppose this is a known issue: #8710, #7239, so maybe someone can help.

The select component is located on an app bar on the screenshot.

I tried setting box-sizing: border-box on App bar, no help.

Expected Behavior 🤔

The scrollbar should not disappear.

Your Environment 🌎