Hi,
why did you retag https://www.openstreetmap.org/way/1051758731 from leisure=pitch + sport=equestrian to leisure=horse_riding? I think this area was correctly tagged as a riding arena, compare https://wiki.openstreetmap.org/wiki/How_to_map_a#Riding_centre_(equestrian). Now, after you retagged it, therae is a small riding centre mapped inside of a large one (https://www.openstreetmap.org/way/1051758730), what does not makle sense.