Email Conversation History Reference multi-person Broken

This seems to be new to this week, curious if anyone else is seeing the same.

So for example I email 10 people (cc and bcc mix) an email with the subject "Q3 26 priorities" and they reply.

I want to be able to reference that in Copilot like /Q3 26 priorities and get my outbound and ALL replies as reference.

I know I did this last week and it worked. This week it only wants to show me the latest reply. Then it says it needs to search to find the rest and starts searching a bunch of COMPLETELY unrelated meeting transcripts and files. I deny the unrelated things because it will get misled and it just keeps looping demanding other things then hallucinating relationships to unrelated info when 100% guaranteed the answers it needs are in the email thread.

Just me?