I don't really know how exactly to explain it, but conveyor belts used to push you into the middle of each other like in this image.
Now they only push you half the distance. Here's a GIF of what I mean.
I don't know why they changed how they worked because they were perfectly fine. You could possibly fix the design I used by offsetting them and the switches but oh well I already sold everything so I can't test it. Using barriers is probably the way to go now.