Please note that this is normal as it is the default behaviour of the PBX and currently cannot be changed. As a work around you could setup a digital receptionist before the Queue where it plays a message and immediately forwards the call to the queue.
Alternatively you could post this as a feature request to our ideas section of the forum https://www.3cx.com/community/forums/3cx-ideas/ . All posts are reviewed by their corresponding Departments and, if feasible and voted for by other users as well, may be implemented in an upcoming service pack or update.