I'm trying to create a 'pop-up window' from a tab that stays with that tab.

I've tried using window on the viewport and a floating panel inside the tab view. Both stay in front when switching tabs (unless the window is modal, which prevents anything else).

I want the window to be modal within the tab, and still allow other tabs to be selected.

Is there some config combination I could use? I'd prefer not to have to resort to custom handlers or overrides.