Just to avoid any misunderstanding about what I meant by tabbed windows I have attached 2 screenshots. One shows the context menu which I used to create a new window - the top item in the list. The other shows five open windows, underlined, 4 from one database, 1 from another. I don’t understand how this can be an unsupported and uncoded feature; hence my suspicion that we are talking at crossed purposes.
Whether working on one project or multi-tasking I find this arrangement extremely productive, far more than trying to have random access to any of the open windows by other means.