> think for crossings StreetComplete now only asks about the actual crossing nodes, so no more duplicate quests.

It can be confusing for roads where both sides are separated or where there is a traffic island in the middle. There you have two crossing nodes (and sometimes even the footway leading over the road). But in general, I think it is very hard to actually cause trouble with StreetComplete. Furthermore, not every single quest has to be answered, although they typically only exist if there is an obvious correct answer the vast majority of the time (to not annoy users).