Bus Stops - all empty at the same time?

Hello, I notice that when passengers arrive by bus they all stand at the bus stand until all buses stop unloading and then on mass like lemmings they go to the gates.

I am assuming this is a bug or a programming glitch that treats all exiting bus passengers as one until the bus has finished exiting?

It’s more likely that most of them arrive at the same time for the same flight. So they’ll all stand around waiting until the game issues the next directive to them - i.e. checkin is open for their flight.

This shouldn’t happen if you have seats and stuff in your terminal (before security) for them to wait in before checking in.