I found a little bug with the routing on foot, or maybe it's a feature
: if a stop which used to be in walking range (catchment area) of another stop, and which had created a routing link, is redesigned so the new distance between the two stops exceeds the walking range, the routing link is still kept up. I made a screenshot to demonstrate this:
Windborough Printworks Railway Station used to be in walking range of Ronmere Southminster Stop. Then I removed several train platforms, but the passengers still kept going that route, which is reflected by the "direct routes" entry (I'm playing with the most recent Windows complete package, so the maximum distance for a foot link should read 0.75km (?)). I said that this could be considered a feature because when one designs very wide stops, the effect from that is a little similar. I can also imagine that detecting such a change is non-trivial. But intuitively I would say that the link should break down when the distance exceeds the catchment area, so you can effectively do something about undesired foot routing easily.
As a workaround, I deleted Southminster Stop and immediately rebuilt it - the foot link was gone then and didn't reappear.
Edit: I forgot to point out that the actual distance and travel time do get updated though, so at least it doesn't allow completely ridiculous game exploits
