Hi,
https://www.openstreetmap.org/way/1306722415 does not look like a horse riding center (tag leisure=horse_riding); it looks like a horse riding arena. In OSM riding arena are usually tagged leisure=pitch + sport=equestrian and iD has a preset for horse riding arenas. Compare
https://wiki.openstreetmap.org/wiki/How_to_map_a#Riding_centre_(equestrian)
https://www.openstreetmap.org/way/882912632 (example)

Same problem here:
https://www.openstreetmap.org/way/1306722450