We found out that the events 'mouseup' and 'mousemove' registered in daypilot-all.debug.js line 6227 are never unregistered, causing a leak every time you zoom in/out of the component.
this.registerGlobalHandlers = function() {
DayPilot.re(document, 'mousemove', this.gMouseMove);
DayPilot.re(document, 'mouseup', this.gMouseUp);
};
The version is : 8.3.2522
Let me know if you plan to fix that :)