Have now also tested with aw-watcher-vscode with some modifications, works well!

Otto-AA/aw-watcher-vscode#2

Can't test because the app can't connect to the aw-server.
It fails at this part:

awclient.info().then(
   (response) => {
     if (response.status > 304) {
       console.error("Status code from return call was >304");
     } else {
       this.connected = true;
       this.info = response.data;
     }

because it somehow makes the request with the method OPTIONS instead of GET. (Tested resending the request with GET and got the correct response). From the aw-client-js it seems to me that it should make a get request.
A screenshot of the request (180kb is sent request, 0kb is response)

Do you have any ideas how to fix this?

@Otto-AA It's clear in the aw-client-js code that info does a GET request so I'm not sure what is happening there. It should not even be allowed to send a OPTIONS request with a body so it doesn't make sense to me.