Hi @receptim,
I was able to reproduce the same behavior as you had :
1-locahost:12491: does not work.
2-https connection to the server: works
Our main hypothesis so far is that localhost works using cordova’s bundle while the network one is the “modern-browser” bundle. The first gives Meteor.isModern === false while the second one gives true.
Cordova bundle would not support loading ES2020 while modern bundle would.
I don’t know how to force the modern bundle to all Cordova’s bundle to try it.