In Legacy interactions we had the ability to change the height of an element from 0px to auto, which was a lovely effect. However, Interactions 2.0 does not support height: auto, and as legacy interactions have started to become buggy the need for this fix for IX2 is more important now than ever.
This function is still available in IX2. Here is an example:
Hope this helps. :)
Nelson, Designer Evangelist
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