If that's mazenod, those are technically two buildings but separated to three in this instance, I think it's better that way to show they are separate buildings. and yes, they are classified as one single building/location

Resolved in #84658476

I already fixed that issue iirc..

Currently, it was actually a tagging warning shown on the OSM editor I only fixed it to what's recommended. You can initiate a topic on my behalf if you like.