JOSM warning when adding subway entrances to a stop_relation area


I added subway entrances (nodes with railway=subway_entrance) to a stop area relation (public_transport=stop_area), with no role. This is what the wiki recommends:

But when submitting the changes, JOSM gives me this warning (which I ignored):

The relation is here:

Did I do something wrong or is it a (minor) bug?

Was a bug. I fixed it. It will appear in JOSM_latest tomorrow and in JOSM_tested in approx. one month.

Wow, that’s fast. Thank you!