Testing in Safari on iOS 7.1.1 and Chrome (Mobile) on iOS 7.1.1, version 36.0.1985.49, your footer works fine and stays where it is, despite scrolling in any direction.
I know that some browsers do not support the position:fixed attribute (for example, some older versions of IE), but it seems to work fine for me on Chrome / Safari mobile devices.
It would be helpful if you added things like the mobile device (s) you tested for, the version of Chrome you tried, and the OS version.
Also, I think your title needs to change from "position: absolute bug ..." to "position: fixed bug ...";)
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