Thanks for bringing this to our attention! The definitive source for traffic ordinances, such as speed limits, pedestrian street and one way roads, is the Swedish Traffic Authority's database of local ordinances: https://rdt.transportstyrelsen.se/rdt/AF06_Search.aspx?UseStfs=1
The one in question on this street is this one, which states it's a one way street to the east: https://rdt.transportstyrelsen.se/rdt/AF06_ViewDocument.aspx?ForeskriftId=cc28bf5b-f982-43b0-8821-93be9fe62e37&NoNavigation=1