Missing crosswalks in LTN "crossing" feature

Hi,

Let's take this itinerary: https://brouter.de/brouter-web/#map=17/48.38830/-4.48477/cyclosm&lonlats=-4.481242,48.386468;-4.486091,48.388378&profile=hiking-mountain

This path crosses two crosswalks:
* https://www.openstreetmap.org/node/9290639027
* https://www.openstreetmap.org/node/4353761357

Unfortunately they don't show up in:

Even after re-importing fresh OSM data.

Note that those are only 2 examples, but there are more missing crosswalks on the transit roads.

What I don't get is that for example a crosswalk with similar properties does show up fine: https://www.openstreetmap.org/node/4353761353

Thanks!