More useless chiming in, but same issue here. Unusable Gmail integration across multiple devices and operating systems. Also, I offer a pre-emptive "Shush now!" to anyone who writes that it works fine with the browser extension, or that Evernote is so great that they are exempt from fixing broken features.
(Been a paying user for over 12 years, and in spite of various shortcomings, it's generally been a reliable tool--surprised to see complaints about this issue going on for so long without being addressed.)