freebeer
The autofreie-Insel is not present in the OSM data, just the streets tagged as residential.
The bug-report is an indication that in order to shut-up-StreetComplete, the missing info needs to be added or else this question will continue to be asked of the next Victim to be in this area.
As soon as the info is added, StreetComplete will - in theory - stop asking about this particular area.