Google Translate indicates that the note is about tram line 1 being wrong here. It stops here according to OSM, but not according to Västtrafik: https://www.vasttrafik.se/globalassets/media/kartor/linjenatskartor/sparvagn/linjenatskarta-sparvagn-och-bat-190816.pdf

The relation for tram line 1 seems to be duplicated, but with slightly different turns around Hagakyrkan:

Tynnered -> Östra Sjukhuset:
https://www.openstreetmap.org/relation/2201150
vs
https://www.openstreetmap.org/relation/5455642

Östra Sjukhuset -> Tynnered:
https://www.openstreetmap.org/relation/2201179
vs
https://www.openstreetmap.org/relation/5455643