I’m not quite sure what to make of this. Could you provide screenshots of misdirected PR comments (ideally showign both PR A and PR B), as well analysis logs?
2022-03-29T13:10:44.1501459Z INFO: SCM Publisher is disabled
It’s quite likely that that’s playing into this. Without SCM info it’s not clear to me that the server has what it needs to identify the correct PR to decorate. You might check the Scanner Context (Project Settings → Background Tasks → [cog menu] → Scanner Context) for this job. You might also re-enable SCM info.