I used bike routing from osm node 265752525 (Adenauer Damm) to 206028980. The navigator tells me to slight right when cycleway 297975384 starts at the crossing to Adenauer Damm. But the Adenauer Damm is tagged with cycleway=track, so there shouldn't be any message that I have to change my way.
Driving from 25469330 to 235594117 gives no hint as it is expected (bear right)
http://www.openstreetmap.org/directions?engine=mapzen_foot&route=53.75288,9.67037;53.75321,9.66892#map=19/53.75311/9.66999
From 290730059 to 290730088 it even tells me to turn right, but its only using another way: http://www.openstreetmap.org/directions?engine=mapzen_bicycle&route=53.74149,9.69304;53.74134,9.69417#map=19/53.74142/9.69361
Driving from 25469330 to 235594117 gives no hint as it is expected (bear right)
http://www.openstreetmap.org/directions?engine=mapzen_foot&route=53.75288,9.67037;53.75321,9.66892#map=19/53.75311/9.66999
From 290730059 to 290730088 it even tells me to turn right, but its only using another way: http://www.openstreetmap.org/directions?engine=mapzen_bicycle&route=53.74149,9.69304;53.74134,9.69417#map=19/53.74142/9.69361