Crafting table displays old info
Crafting tables still display old info, Leather armor - now Medium armor, and on Armor we can see Medium armor, but in Crafting table still Weight class: Light, the same with Chainmail - in crafting table still Weight class: Heavy
@Turrug In the video, Prometheus did mention that the tooltips had not all been updated yet. That includes some of the crafting table info.
Fixed in patch a260h