Hello marteno_jalapeno!

The modified building has been turned into an area indicating kindergarten grounds. The tag "building:yes" or other more specific building tag should be added to turn it back into a building.

If the whole building is a kindergarten I think the kindergarten tag could remain in the building shape. In the case that there are apartments or other businesses in the building, the tag should be moved to a new, separate point. If possible, it would be great to add some information about the kindergarten, such as its name.