GinaroZ
Reopening this note as there was a couple notes nearby that were opened about it. Definitely a maps.me problem - it is only this roundabout which causes an issue, nothing wrong in OSRM or GraphHopper. https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=56.82146%2C-5.09468%3B56.82148%2C-5.09424 - going to the Glen Nevis Road was fine though.
I deleted and recreated the mini roundabout, so might just need to see if it still exists in a new Maps.me update (whenever that is).