Missing model in new game mode: Conqueror cache

I started playing against AI in the new game mode and got this issue:

Description says veteran spearman with 4 bonuses. I have some hardened spearmen in the army which display fine. They spawned as reinforcements from the control point.
I played House of Lancaster on Dry Arabia vs Hardest AI, captured control point with a first villager.

I couldn’t reproduce it on the second game, but got on third one after 17 minutes. The system uses ECC ram, no any type of overclocking, all installed files were successfully validated by steam.