Looks like EE finally fixed the final mythic transformation for Lich in DLC1, they get the correct model and lose their CON score. All the other final transformations are still missing though. :
Pathfinder: Wrath Of The Righteous shows off Crusade Mode | Rock Paper Shotgun
Pathfinder Product Labs
Transformation Spell Issue - YouTube
NextSTOP Digital Pathfinder Model — NextSTOP Consulting
Pathfinder: WotR - Don't Miss Your Mythic Path's Transformation - YouTube