To build ionic with the new xCode 10 one must use the build flag UseModernBuildSystem=0
As multiple persons have expressed here: https://github.com/apache/cordova-ios/issues/407#issuecomment-424014105 This build flag causes issues with livereload for Android and iOS.
Basically the terminal is initializing the livereload session without actually completing it. Sample output:
How can this be fixed?