Blue Iris

After dragging a window outside the application, I could always right click on that window and choose "close" to get it to again be contained within the application. Is that option gone now? & if so, what's the alternative to perform the same thing?

Are you referring to the new 'Layout' feature?

In some cases, when switching to a Layout that has pop-outs, then back to a layout that does not, some windows will remain popped-out!
To remedy this, choose a layout that has ALL cameras not popped-out, then back to the layout you want.

I guess I WAS unknowingly referring to the layout......I just hadn't been keeping up with changes in the various updates and hadn't realized that was different. I figured out how to do what I needed though, but thank you so much for your reply.