Hello,
what is your source for "wrongly one-way tagged"? As far as I know that part is a https://wiki.openstreetmap.org/wiki/Key:oneway#False_one-way_streets_(Faux_oneway) (see "note" of https://www.openstreetmap.org/way/31288034/history) and was mapped like suggested in point 3. Has this been changed so that the road is now open for everyone in both directions?
Regards