Unwanted outlines on 300dpi bitmap

[Acorn]

Iv'e noticed that also.

It produces less than ideal bitmap outputs and I have to potter with the files after.
In this example the shapes are exactly next to one and another.

(This example is on v11 because v19 jammed on an update, but If I remember the newer version behaves the same.)

Marc, this is where the benefits of SVG shine. All your shapes would be rendered as SVG Paths and as such are more accurate that PNG positioning.

I assume your performed Combine Shape > Intersect All Shapes?
My design page then shows a very faint slice line that grows no wider up to max zoom.
When rendered the browser shows the cuts more roughly and the edges more around when scaling.

I cheated by adding some CSS:
<style>
.edging {
transform: scale(1.018);
}
</style>

The proper way to do it is to apply the feMorphology Filter Primitive, using a filter SVG:
<svg>
<filter id="blur">
<feMorphology in="SourceGraphic" operator="dilate" radius="0.5">
</feMorphology>
</filter>
</svg>

and applying some CSS to all the shapes as filter: url(#blur);.

Acorn