Van instead of bus during passenger boarding

[Nimic]

When I start the boarding, instead of the standard cobus, I have this small van. Even if I'm boarding 150 passengers, I have always this van during the boarding. It happens everyware, in all airports and at any stand type. On the contrary, when I do the unboarding, all it's fine. What's wrong?  

https://i.imgur.com/3LBYBFd.jpg

[virtuali]

This has been discussed so many times on the forum, for example here:

http://www.fsdreamteam.com/forum/index.php/topic,10873.msg85247.html#msg85247

And here:
http://www.fsdreamteam.com/forum/index.php/topic,11331.msg87194.html#msg87194

In a recent update, we added an additional option in the GSX Settings "Estimate Passenger number" that, if disabled, will ask you to confirm/change the expected number of passengers on board.