This has been bothering me for some time. I have been wanting to change names of some of my Notebooks in Evernote (Windows client) but it doesn’t work.

I right cklick, select Rename, enter the new name and hit Enter and… it reverts back to the old name.

Finally figured out a work around: Instead of right-clicking and selecting Rename, I right-click and select Properties. From the properties window I can then change the Notebook name and it actually renames it!

Windows 7, Evenrnote Windows client 5.6.4