Windows 10 mobile 10.0.15063 map
Map became unusable after phone 10.0.15063 update. Because:
a) It is extremely slow. ResolveCompleted event comes after ten seconds.
b) It draws MapPolygons blurred with jagged borders.
c) It draws MapPolylines in wrong positions (very, very often). They take right position then after manual shifting of map, but initially 20-30% of them are misplaced after being added to MapElements collection. Most often it occurs near map borders.
d) Lines on traffic layer are blurred, jagged and looking bad.
UPD2: MapPolyline may disappear (often) on map heading change and/or map pitch change.
UPD1: Map fires ZoomChanged event on every map move unlike pre-15063 map. ZoomLevel property behavior is also strange: its value is different from assigned before.