Roundabout looks like a strange kind of star

[MilanV]

http://alpha.map1.eu/#zoom=15&lat=50.03166&lon=14.50702&layers=BTTT

vs.

http://www.openstreetmap.org/?lat=50.03107&lon=14.50753&zoom=15&layers=M

I'm not sure if it is another evidence of issue #82 or not.