Raid without bad omen

Never have killed an illager captain, so never had bad omen, but a raid triggered in the village anyway.

 

Not sure how to reproduce other than waiting around in a village.

 

Possibly relevant: Earlier in the game, saw an illager patrol. I saved a quit. When I came back, all were despawned but two axe wielding illagers without banners. I did kill those. Did not have a status effect.