To prevent multiple duplicated world maps on highest zoom level I'm using `noWrap=true` option. It's working well but only on the left side on the map (the grey area), the right side still displays extra tiles.
Why is that?

UPDATE1: Looks like it's an issue with specific Mapbox tiles or the way they are loaded?
Here noWrap and `https://{s}.tiles.mapbox.com/v3/ebrelsford.ho06j5h0/{z}/{x}/{y}.png` 

works perfectly: [NoWrap works JSBIN link](http://jsbin.com/cokirih/1/edit?html,js,output)

But once I change to another way of loading tiles using styles 

[NoWrap broken JSBIN Link](http://jsbin.com/gifival/1/edit?html,js,console,output)

I can scroll right and still get tiles

I opened a github issue, I suspect it's a bug with the library
<https://github.com/Leaflet/Leaflet/issues/5938>

[![enter image description here](https://i.stack.imgur.com/URnXe.png)](https://i.stack.imgur.com/URnXe.png)