Boss messages - no countdown when boss is started with egg

If a boss fight starts automatically (scheduled fight), there is a countdown in chat. For example "Joining closes in 10s! 1 player(s) joined." If a boss fight is started with a boss egg, there is NO countdown or message that tells you how long you have to join. Not sure if this is a bug, but given that there is a countdown for a natural fight, it makes sense for there to be a countdown for an egg-started fight (and I think it's a nice/helpful feature in general)