This gate and the internal roads on both sides behaves incorrectly using all routing modes I could find.
For example when routing:
    From Wlodarzewska 51H
    To Wlodarzewska 43H

- Graphhopper and OSRM give bogus non-sensical results ignoring all the internal roads
- Valhalla routing does not ignore those internal roads but ignores the gate that is permanently shut and impassible even to foot traffic.

IMO those roads should probably be marked similarly to ones around Wlodarzewska 57C and the gate should get converted to a wall or some other "actually-impassible" gate