This is a possible bug. When I zoom Map with mousewheel, fast and multiple levels, ArcGIS JS API throws an error, continiously:
Cannot read property 'remove' of null
I happen to have a lot of Tiled layers in my map, like 20 or so. And all of them
this line: this._loadingList.remove(a.id);
this._loadingList is null, so it thats why it throws. I think it could be some timing issue, possibly related to performance (multiple level zoom + lots of layers).
I was wondering if this is a bug or maybe I am doing something wrong? Is there a workaround?