TL;DR: when implementing hide and show animation use-cases involving height going to 0: you'll need to switch to from() tweens on the show condition, which means you'll need to perform a set() of the properties you're "from'ing" right before you from() them.
In my case, I was going to height:0, opacity:0, so on "show" I needed to set() opacity:1, height:1, and then from() height:0, opacity:0
While this may seem strange, it's less complicated than calc'ing heights of each items and animating to that specific value.
