Sounds like your indexer isn’t returning it when Sonarr requests it, possibly because it’s in a different category on the indexer or wasn’t on the RSS feed when Sonarr checked them. The fact that the search is not giving the result indicates that it’s probably the former, though it could be something else on the indexer’s side.
Indeed that appears to be what happened. Star was downloaded automatically and there last night. I’ve never seen it pull something else before so I thought it was a bug. Thanks.