Android URL Scheme not saving in Build Settings

I define a URL Scheme, and it doesn’t save in the build settings for android apps. It works fine for iOS.

Specifically, attached image is the error thrown in the console when I change the input of URL Scheme in the Android Build Settings:

SOLUTION (kind of): I was not able to resolve the issue itself. However I worked around it by cloning the app (thanks to this lovely new functionality) and then was able to define the URL scheme in the cloned app.