https://www.openstreetmap.org/node/5467410889
traffic_signals:direction=all is obsolete in that case (and afaik not a documented value). Just remove it.

https://www.openstreetmap.org/node/807254127
"Froschhüpfen und Balancieren" is not Swiss German, that's just normal German. Same goes for the other name:gsw on the other stations.