After upgrading to the latest release of the Routes module I noticed that routes drawn on the mini map don't match the nodes on the map. The pattern still looks right, but there seems to be some weird scaling factor making the route drawn bigger than it should...
On the world map everything is OK.
Switching back to r58366 fixed this problem.
Cartographer_Routes: Fixed minimap line drawing offset bug in our cache implementation that resulted from a race condition between the return value of GetRealZoneText() and the ZONE_CHANGED_NEW_AREA event not matching up in the core Cartographer:PointToYards(x, y, zone)