Viewport broken in iOS 9 on iPhone and iPad?
There appears to be a bug in the latest (as of this post) iOS release for iPhone and iPad. The bug is causing websites using popular off canvas navigation to show by default and zoom the viewport out. Apple no doubt will fix this soon but there is a fix for the viewport in the meantime, heres how.
All you need to do is add this to your viewport tag
shrink-to-fit=no, this should stop the viewport from zooming out and make the website look correct again.
This is just a temporary fix and be sure to double check that this fix is not causing issues elsewhere in your site.