Price Sensitivity in Public Transportation

I have noticed that my citizens are much more sensitive to price changes in public transport systems. Im fairly certain that, in the past, it made almost no difference between setting the prices to max vs free (similar to parking). But it appears to be somewhat different now.

Im asking because the sensitivity seems to be too sever. In my city of 70k the bus costs 5 bucks, the train 6 bucks and the usage of trains severly drops while they all seem to take the bus now. Although it takes them basically a day longer for the same distance. Changing the price to 5 bucks for trains but 6 for buses, and all buses ride empty. Now they take the train and than walk the rest.

As someone else noticed that? I found the pathfinding to be a lot better these days but im puzzled by how transport and pricing is factored in at the moment.