I experience this same issue. Tried using a different project, no luck. The api-key just wont stay put, for some reason. I’m on 4.0.0-beta.10 W10 with a nodejs project. @George any suggestions on how to properly save the api key for the Google Maps component?
To add to this, if I add the key manually in the script tag in layout page in NodeJS project, when I add some new component say places etc in a content page, it will clear out the key from the layout page script tag.
I have seen that happen only when adding Google stuff to newer pages.
Once its added, after that saving those pages does not cause removal anymore from main page.