I have been trying it myself, and the only way to achieve this is to reset the editor layout. You can do this by going to the Window->Reset layout, although this will completely reset the editor layout, so any windows arrangement you have will revert to its default state.
I think the Blueprint Debugger window is a bit different on later versions, so no idea if the same issue happens there.
It looks a little different and one may no longer click within the window. The location is now nestled within the (second?) menu layer. There are three tab layers…