Hi,
you have added leisure=horse_riding to https://www.openstreetmap.org/way/39979940, but this building belongs to Club Hippique des Alpes  (https://www.openstreetmap.org/way/153093821) which was and is correctly tagged with leisure=horse_riding. To map a small equestrian centre inside of larger one makes no sense to me and is a violation of the one-feature-one-osm-element rule. Maybe you can use https://wiki.openstreetmap.org/wiki/Tag:building=riding_hall instead.