Properties panel

The properties panel is now a separate window, and not a left hand side bar anymore. Does anyone know how to fix this? I’ve tried everything, and contently have to move it around when working on a project.

Is this in Windows or Mac Rhino?

I think it might be Windows but that UI has the Properties panel on the right and not in a side bar. If you are docking the panel and it isn’t staying put between sessions, it’s likely a permissions issue on your computer, try running Rhino as an administrator. If my guess is wrong, please post a screenshot of what you mean.