This method of applying the scrollbar is problematic and the reason I did not originally do this for the pull request.
If you have a lot of playlists, to the point where you need to scroll down, the playlists will then be underneath the main playback bar.
The commit https://github.com/williamckha/spicetify-fluent/commit/da49e6aee2ac068e033ae3cc51aea82d299cb0b4 has resulted in being unable to reach the last few playlists.
This method of applying the scrollbar is problematic and the reason I did not originally do this for the pull request. If you have a lot of playlists, to the point where you need to scroll down, the playlists will then be underneath the main playback bar.