OK, thanks for the report… but they have been on the map for several years now.
https://www.openstreetmap.org/node/7473460116
https://www.openstreetmap.org/node/344706430

StreetComplete will only show you items which need a review, if there is missing data or if they haven’t been checked for a long time.  Since those containers have been checked multiple times recently, StreetComplete will not prompt you about them.

But thanks for the initiative anyway,