Pink rectangles on Mapnik at zoom 17

Mapnik at zoom level 17 looks like pink color is painted over the map.
Here is a screenshot from browser. Right side is colored, including ways:

Most of my city looks like this (at zoom 17):

I moved around the map and have found borders of the color fill. Links to it’s corners: - intersection - intersection

In JOSM i created nodes at these coordinates and got this:

Three rectangles, one large and two small.

What is it? I want it to disappear.