Environment: community-daily in Firefox on Mac
1. Have a banner appear in the app by either:
Turning it on from the system console
Being on a community server when it updates to a new version
Being on a server without email notifications and with the preview mode banner enabled
2. Enable the new channel sidebar
3. Ensure you have enough channels in the sidebar for a scroll bar to appear
Observed: The bottom channel will be pushed off screen and cannot be scrolled to. The More Unreads indicator at the bottom of the sidebar will also be off screen.
Expected: You can scroll to view every channel in the sidebar and the More Unreads indicator is always on screen.