Textareas inside <iframe> collapse in Firefox

[Dalimil]

After initializing the search widget and starting the search inside an iframe that contains textareas, the width and height CSS properties are initially set correctly but later collapse to 0.

This issue is specific to Firefox, and doesn't affect Chrome users. It might be a bug in Firefox itself, because the style is set on the HTML element correctly, Firefox simply doesn't read the value and returns undefined instead.