The current free map (OSM) of Slovakia (44-201908120) used in Navigator seems to be missing a lot of one-ways, e.g. see the situation in the town Hlohovec (48.426588, 17.798992) on the screenshot from the smartphone running the Navigator application with car-profile vs. the screenshot from the OSM website.
App screenshot
:
OSM website screenshot:
Used installed version is the 5.5.35 version on an Android 4.3 device (Samsung Galaxy SIII (i9300)).
The openstreetmap one ways are made by the OSM-Community. You can make this improvements by yourself. But it will need some time until the updates be used in new mapfactor maps.