Automated triage: Not a bug
Thank you for reporting this issue. This report is from an older version and nothing recent confirms it still happens. On the current version the separator in this overlay sits on the overlay's solid background, the same way it does in other overlays. If you still see this on the current version, please post a new report with the style in use and steps to reproduce.
This is an automated assessment. A member of staff may review and update it.