Right, as I suspected - you’re querying the journal.
This is pretty much working as intended. The journal captures a history of alarm-related events. If you acknowledge the same alarm event 20 times then you’ll see 20 entries in the journal telling you so.
Where you wouldn’t see 20 entries would be an alarm status table, which would continue to show the one event (as acknowledged, whether you do so 1 or 20 times) until whatever filters on your status table might cause it to stop being shown.