Properties tab doesn’t split off

A little confusing, the title. When opening the latest Rhino , I have the properties tab open . I want to drag off the layers tab and the display tab( or any) , but they do not drag off. Does anyone else see this? Thanks, Mark

Did you accidentally hit “Lock docked windows” (right-click on a tab)?

When I get back to the computer I’ll check that. Thanks

That was it. Many thanks—-Mark