Quick Editor has multiple scroll bars

The Quick Editor window can have multiple scroll bars.

On MacOS if you go to Settings > Appearance > Show scroll bars > Always and then open a QE window you will see there is an additional scrollbar around the window that moves a few pixels (you may need enough avatars to go off the bottom of the popup)


We should adjust the styles so the extra scroll area is not needed (the content is reduced by the few pixels), and cannot appear (by disabling overflow)

Reproduce the issue on macOS by setting Show scroll bars to Always, then opening a Quick Editor window with enough avatars to extend below the popup. Inspect the Quick Editor styles and overflow behavior. Done means the content fits without the extra scrollbar and the additional scroll area cannot appear.

Written by the indexing model from the issue text.