Unfortunately, from our tests, this appears to be an iOS8 regression (it doesn't happen in 7.1). I was able to boil it down to this as a test case:
[code]
<!DOCTYPE html>
<html dir="rtl">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>iOS8 RTL test</title>
</head>
<body>
<div style="background: linear-gradient(to right, yellow, red, blue, green, orange); position: absolute; width: 2000px; height: 200px; right: 20px; left: auto; top: 10px"></div>
</body>
</html>[/code]
iOS8 seems to think it's scrolled all the way to the left already. Unfortunately, I can't see a way to workaround this, so we'll simply need to report it to Apple and wait for a fix from them (along with various other iOS8 specific bugs we've seen...).
