Same issue here except it's on Windows and I actually need to reboot my primary windows machine to be able to edit again - restarting the app doesn't fix it.
So, to use Evernote when editing "freezes," I need to shut down every job I'm running, close every open file I'm working on, reboot the comp, re-open the files I'm working on, restart the jobs I'm running, and then get back to Evernote... Not the most streamlined user experience!
Please fix!!