The log snippet includes 5 sessions, whereas I understood that two sessions were enough to exploit the issue.
This complicates the analysis. Can you please produce a log with only two sessions?
Then, assuming that it will be short, you can send it to support@lightstreamer.com
Please ensure that the log includes the Server startup and, in particular, the subscription requests by the two clients.

Note that, unless the client explicitly requests all updates, updates not sent are not lost, but just filtered out in order to always send the latest state.
This is possible also when specifying "unlimited" frequency. Only the "unfiltered" setting forces all updates.
Obviously, such filtering is expected only when there is some bottleneck or some race condition.
With these conditions, it is possible that two different clients receive a different number of updates.
Apparently, these conditions don't apply to your case; but perhaps the full log can help to clarify.