All right, then I had the “wrong behaviour” till this update. I’d prefer to get it back though: as I said, starting with 5 open windows/projects and closing one project, I would rather stay with 4 windows/projects than with 4 w/p + an empty window.
Closing a window right away is, certainly, a possibility, but it will also close a non-project window (say, if I close it by mistake). Not a big deal, but I got used to “close project” (and even assigned a dedicated short-cut to that) precisely in oder to avoid such situations.
Thank you both for the clarification!!
I do not “close” the thread though: if anyone experienced the said change of behaviour after the last update and knows how to get back the old behaviour, do let me know, please.