Logbook count with search

Count events
https://icatplus.esrf.fr/logbook/{sessionId]/event/count?instrumentName=ID00&search=testtt&limit=100&skip=0 => 16460
while retrieving events
https://icatplus.esrf.fr/logbook/{sessionId]/event?instrumentName=ID00&search=testtt&limit=100&skip=0 => []

I think it's due to the broadcast events which are not filtering on the search