Hello. This has been happening consistently for the past versions. It's happened with Empire and Kingdom starts.
I'm not sure if Janusk is meant to be a merchant at all times. But occasionally he'll spawn with different portraits and usually a tech specialist specialization. There is no problem when he starts with the usual merchant / redhead portrait; however, upon reloading games he will always default to that portrait regardless of which combination one he started with and will remain with the default for future saves.
The only debug lines I saw that could influence this are these:
Debug Message: WARNING: CUnitType Janusk leaked - refs: 4
Debug Message: WARNING: No cutscene of internal name found, using subpack type name
I haven't seen mention of this in any other thread. I'm wondering if this is normal behavior?