The tab for a notebook has a label that is independent of the notebook of the active note. I don't really see the reason behind this, though maybe there is one. Shouldn't the notebook tab label match the notebook of the active note? Example below:

It would be nice if the tab dynamically followed the active notebook. Particularly, it would be nice if when we moved one note into a new notebook using the dropdown menu, if it opened that note in a new tab that was opened to the notebook.
P.S. Also, maybe instead of the tab icon here matching the add note icon in the context menu it could match the notebook icon in the sidebar? (And maybe that icon could be a notebook stack?)