Steps to reproduce:

1. Create or open any Project from one major version (e.g. 6000.0, 6000.5) and set it to the Default Layout
2. Try to undock and drag the unfocused Project or Console Window, whichever one is unfocused
3. Create or open any Project from any other major version (e.g. 6000.5, 6000.0)
4. Try to undock and drag the unfocused Project or Console Window, whichever one is unfocused

Actual results: After opening a Project (Creating, Upgrading) from another major Unity Version (One from 6000.0, the other from 6000.2) the unfocused Window that is docked together with these Windows (Console, Project Browser) cannot be undocked when it is not activated/focused until the Layout is reset

Expected results: All Windows that are docked with other Windows and are not in front can be undocked despite which Project is opened

Reproducible with versions: 6000.0.66f1, 6000.2.15f1, 6000.3.6f1, 6000.4.0b5, 6000.5.0a5

Tested on (OS): Windows 11