Wrong rendering of areas

[nijel]

area: yes
highway: pedestrian

is rendered as street and not as an area:

http://alpha.map1.eu/#zoom=17&lat=50.03678&lon=14.49783&layers=BTTT

OSM renders this as an area:

http://www.openstreetmap.org/?lat=50.036858&lon=14.497101&zoom=18