I am back playing Train Fever after 3 months pause.

I was hoping that they will fix the issue with cargo demand.  But as I see it it is still the same or I am dong something wrong.

For example I started a medium map. I am trying to supply 3 cities with Wood goods and Iron+Coal goods.   First 4 years the Wood factory was producing like mad upgaded from 25 to 50.   The same was for Coal+Iron goods factory. And now after 5 years somehow it started dropping to 17 and still dropping.
I am checking those three cities and I see that the demand is not fully met.

What is the problem ?

I remember from 3 months ago when I created an oil goods route the cities  wanted only oil goods no matter what I did.  So bcs of this I stoped playing Train Fever.

I was hoping that now it is OK after thsoe patches but I see it is still the same.

What do you suggest ?