'Why is typing in a textarea in Firefox causing the screen to scroll?

I am experiencing an incredibly bizarre issue with the isotope plugin in Firefox only. I have a textarea in each of my isotope elements and when I scroll down to the bottom and type in one of the textareas, the screen jumps to the top. I have reproduced this in jsfiddle:

http://jsfiddle.net/galtschul/WfTZ5/

I have been looking at this for hours and cannot figure out what is causing this scroll even to fire. Would love some help!



Solution 1:[1]

As I observed, its due to .isotope-item { position :absolute} property. Tried lot, but really couldn't make out the solution.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Priya Nalang