I have 2 macs. One is running v 10.3.7 build 2018 public, which is currently the latest version available for download from evernote.com. The other is running the version from the app store, which is v 10.3.7 build 458378. On the 2018 build, I can cmd-` to switch between windows in the app. But on the app store version this does not work.
I know that the latest version is built on Electron, and I know that there have been bugs related to cmd-` switching in Electron before, so perhaps it's related.