Windows locked together

In CorelDraw 2019, Windows 10.

I can open a 2nd window in Corel and display it either Cascade or Tiled.  However if I display a Tab in one Window, it automatically switches to the same TAB in the 2nd Window.

No other program has this odd behavior and it makes displaying multiple Windows useless.

How can I unlock the display windows so that they don't automatically all show the same thing?