Until a few months ago, it was a straightforward process to close all BBEdit documents and save any unsaved changes. I repeatedly pressed Command-W, and if the next document had no unsaved changes then it would simply close, and if it had unsaved changes then BBEdit asked me if I wanted to save them. Eventually, all the documents would close and BBEdit would have zero documents open.
Starting a few months ago, this changed. Now when I repeatedly press Command-W, at some point during the process, the main BBEdit window displays "No Editor". The point when this happens seems completely random and arbitrary to me. If I press Command-W again, BBEdit displays a message to the effect that there are still open documents, which in some cases have unsaved changes. But I can no longer reach those documents by pressing Command-W one more.
Sometimes it's possible to reach these open documents by selecting them from BBEdit's Window menu - but sometimes it's not. If not, then the only way I can reach them is by navigating to the document in Finder all over again again, and opening them from there. So I can have multiple documents open in BBEdit with unsaved changes, but no apparent way to "reach" them from within BBEdit.
Needless to say, this makes the process of closing all BBEdit documents and saving any unsaved changes far slower and more laborious than it used to be. Any ideas what's going on?