If your clone attended a group meeting but stayed silent, that's almost always expected behavior — not a bug.
In any group (1:many) meeting, your clone waits to be called out by name before speaking. It won't introduce itself or jump into the conversation unprompted, even if it has something relevant to say. This is a deliberate guardrail so it doesn't talk over people or insert itself into conversations that don't need it.
If you expected it to speak and it didn't:
Check whether it was actually addressed by name during the meeting — if not, it was behaving correctly.
Check the meeting summary afterward — it still listens and takes notes even when silent.
See Attending group meetings (1:many) for the full behavior. This does not apply to 1:1 meetings, where your clone converses freely from the start.