ToniE
Sorry, yep.
I said that the bus stop was already mapped correctly according to public transportation scheme 2 (PTv2).
Unfortunately, some renderers (those who draw the map) do not support the pure PTv2 very well.
Those renderers expect a tag called highway=bus_stop (on a node) to draw this little icon "bus". highway=bus_stop, however is PTv1 (the legacy one) and used only for backward compatibility - like showing the bus icon on maps. 
This was the case here - the missing highway=bus_stop - missing from renderer point of view, not missing from "correct mapping" point of view.
I added this highway=bus_stop on the nodes on the road (those with public_transport=stop_position, a PTv2 tag) et voilá: the icon appears.

My initial assumption was that you were complaining about a completely missing bus stop.

Br
Toni