(v10.3.7, Win10) Adding to this sad topic: as we can't modify the preferences writing certain characters is not possible at all (in any app) while Evernote is running. E.g. alt+S is needed to write in Polish (and there are other languages that need this combination) - but Evernote captures that and starts taking a screen shot. The only workaround so far: close the Evernote while typing :(