BPMN example, Sliding "issue" on loadJSON

Hi ! I just discovered GoJS and I used the BPMN Editor example with Websocket to make a Google Drive-like collaborative editor.
It works pretty well but when I add a node or a link to the editor, editors of others people on the documents empty all and re-add all with a sliding effect. The “disappear/reappear” doesn’t bother, it’s pretty fast, but the sliding effect is more disturbing for the user.

I made a video tho show the issue : https://www.youtube.com/watch?v=OxZmNyH4vhk

And here is the code of the loading function :

function goLoadJSON(diagram, jsondata) {
    diagram.model = go.Model.fromJson(jsondata);
    diagram.model.undoManager.isEnabled = true;
    diagram.isModified = false;
  }

If you have any API link, keyword or anything to help me to find a solution, it would be awesome !

Thank you very much !

That sliding effect is the animation manager laying out nodes. You could turn off animation:

myDiagram = $(go.Diagram, {
                         // other init stuff
                         "animationManager.isEnabled": false
                      });

I wrote that by hand so there might be typos

It works perfectly ! Thank you !