"I've investigated the issue, and not been able to reproduce it."
I have nothing more to say on this. Except, please, take an iPhone 6 on your office desk and did the test. All my mates, with the iPhone 6 or iPhone 6S, will be able to reproduce it.
"I should also note that I've posted this bug on the HTML5 gamedev forums, tig source and stack overflow in hopes that it brings more light to the issue." Well done 0Hayes!
And yes. We're all getting a LITTLE frustrated.