RaphaelPasloin
I discover this note after looking history of the park outline and after i refered to this changeset : https://www.openstreetmap.org/changeset/137829447

Park was existing a long time before this article and the oultine should be extended to south. (back of social appartements 136 138 is the park ; also the pitch. 

Allotements are definitivly not part of the park (there's physical separation at present time) ; park is accessible to public, allotements not. East of this point : https://www.openstreetmap.org/node/469417213 and east of the tree row is also not the present park and path in this part are more desire than official. 

Project has also been suspended 06/03/2023 and modified , so future outline is probably not what Bruzz said. 

So we can choose to correct the actual situation or wait that the zone is under landuse=construction (expected end of this year). 