Well it triggers an animation that ends with `display: none`.
https://github.com/EverythingMe/gaia/blob/enhanced-squashed/apps/homescreen/everything.me/modules/Collection/Collection.css#L223

It has been changed to use `animationend` instead in 'homescreen-perf'.
https://github.com/EverythingMe/gaia/blob/914875-homescreen-perf/apps/homescreen/everything.me/modules/Collection/Collection.js#L46