I have exactly the same problem. MacOS Evernote 10.5.7 build 2171 public, Editor v114.1.14753. I have been having this problem for at least a month and updating did not fix it. Pretty basic stuff folks - I can't create a new note without an app restart. I'm assuming that I don't have to pay my subscription any more since I've got a note-taking app that can't create notes?