Cannot add floating toolbar back to main window

**Describe the bug**
On the left hand side of main window's tab bar, there's a widget that lets you move the bar around. If you drag it, and drag the tab bar off of the main window so that it's floating, then you cannot put that tab bar back on the main windows.

I'm using Wayland.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to the main window
2. Find the widget that lets you move the tab bar around
3. Drag it off the main window
4. Try to put the tab bar back into the window

**Expected behavior**
I should be able to move the tab bar back into the main window

**Version, OS and Environment**
(Get details from `copyq version` command if possible.)
- Application Version: 6.1.0
- OS: Linux
- KDE Plasma Version: 5.24.2
- KDE Frameworks Version: 5.91.0
- Qt Version: 5.15.3 on system, 5.15.2 reported by `copyq version`
- Graphics Platform: Wayland

**Additional context**
Nuking `copyq_geometry.ini` fixed it.