trace not session-isolated?

On our production servers we keep a pre-defined number of sessions open to a database. Incoming queries are distributed among these sessions.

I create an mclient connection to that database and I run a trace (any query). The trace displays all functions created by the queries belonging to the other sessions. All together concatenated (or maybe interleaved, I'm not sure) in the output of my trace.

I expect this is not meant, is it?