I am seeing two title bars when a tabbed floating window is restored. One title bar disappears once the tabbed window is resized.
1. Run the docking demo
2. Float the Teal and Green Panels
3. Dock them together as a tabbed notebook
4. Close the application
5. Restart the application
Result: There is an extra "title bar" above the normal one.
Could this be fixed? If not, can you suggest an automated workaround?