Passengers always ride in the lowest class in train

[accord2]

I was playing and I found out that the passengers are only riding in the 'Very Low' Class even if they are Medium or High. The train has coaches for this classes, but they are not being used.
I think it may be a bug?
In the save file you can check the (230) LMR "Rocket" 0-2-2, near Hartford.
Save File: https://www.dropbox.com/s/oqipx5mrttmfdf5/King%203.sve?dl=0

[Ranran]

Code Select Expand

# Passengers who can afford to travel in higher class accommodation on a convoy that also has
# lower class accommodation will only spend the extra money if they consider the additional
# comfort worthwhile. Each passenger's preference for this is randomised on creation. The
# minimum is the same as the maximum comfortable journey time (i.e., at this minimum level,
# the passengers will only pay to travel in more comfortable accommodation if the journey
# time exceeds the maximum comfortable journey time for the lower class of accommodation).
# The maximum a percentage of this figure, set below. For example, if this is set to 500%,
# passengers will travel in a higher class of accommodation if the journey time is more
# than one fifth of the maximum comfortable journey time of the lower class of accommodation.

max_comfort_preference_percentage = 500
Passengers do not always choose the same fare class as wealth class.
Whether they can afford it depends on parameters such as the length of their journey and comfort. The degree of comfort they desire is randomly determined at departure.

[accord2]

Passengers do not always choose the same fare class as wealth class.
Whether they can afford it depends on parameters such as the length of their journey and comfort. The degree of comfort they desire is randomly determined at departure.

Ah! Thank you! I haven't played for some time so I didn't knew this. Sorry for the trouble.