Noifications "clogged"

Yes, it was fixed after the 2v10 release: https://github.com/espruino/Espruino/blob/c23289e6c18f9a88df812b855d2a54a000f54d61/ChangeLog#L14 - so a daily build will have it sorted or it'll be fixed in 2v11

Is there anyway I can test this from the IDE

You can send the commands here: http://www.espruino.com/Gadgetbridge

So GB({"t":"call","cmd":"accept","name":"name","number":"+491234"}) for example. In terms of testing with Gadgetbridge you can either use another Esprruino device that has a serial connection and can forward data, or maybe just do something like:

var log = [];
function GB(d) {
  log.push(JSON.stringify(d));
}

Then connect with Gadgetbridge and do stuff. Finally disconnect and reconnect with the IDE and look at what's in log