geometry problems at edges of map

[mk30]

1. sometimes when an area clips the edge of the bounding box, the whole area is not rendered. in below images, the park that appears with the larger bounding box disappears with a smaller bounding box (that intersects the park).
   
   

2. sometimes when an area intersects the bounding box, the geometry rendered is wrong (looks "incomplete"). additionally, surrounding line (stroke) may be missing. image 1 below shows how the item looks with the larger bounding box and image 2 shows the item when it intersects with the smaller bounding box.
   
   

2 more examples (showing the missing background color, missing surrounding line (stroke), and incorrect geometry):