Hi Tabouli68,
thanks for adding items around Weil am Rhein.  But please use correct tagging: The name tag should not be set in these cases (neither Poubelle nor Banc), "name" is only for proper names.  In particular, it does not make sense to have a French name in a German-speaking location.  Also, don't add "avec dossier" as description, as this is not machine-readable (and me as a German had to look it up in a dictionary).  Rather set backrest=yes as defined here:
https://wiki.openstreetmap.org/wiki/FR:Tag:amenity%3Dbench
Seems like OsmAnd is not great as an editor.
Thanks for you understanding.  Feel free to come back to me if you have any questions.  
johsin18