There can only be a limited number of players who can contribute to escorting the bomb. This is apparent when you spam the emote during escorting and it doesn't register, because said Bomb only need 1 emote to move x distance, any more emote will not "proc". Therefore it is working intended, because locking people out of an event due to too many players are already there is not a good way to do it.

I suggest you just enjoy the event and forget about the whole "working as intended" unless the Bombard stuck in its path. You think it's funny for people getting locked out of Behest?