Frequent bug: while sorting by y-coordinate, the vertices are sorted, but the data coming with the vertices is not.
Gouraud shading, forgot to sort intensities

In my case I was calculating a barycentric coordinate of one vertex and assigning it to a different vertex by mistake.
The artifacts looked exactly the same as you presented, if it is the same problem then the description could be

Everything is currently in pixcryption.core.lib but I feel some functions might be better in a helper namespace to help readability of the code. This is a good first issue if you'd like to refactor/clean up the code base!

The documentation needs a massive overhaul. Currently, someone knew to the library will struggle to understand how to control the graphics.

Attempted to wrap an existing component:

<Scroll
	type="class"
	element="response-scroll-target"
>
	<Box
		column
		className="response-scroll-target"
	>
		{this.props.type === 'success' ? (
			<React.Fragment>
				<Text variant={this.props.type}>
					{this.props.x.header}
				</Text>
				<Text variant="body">{this.props.x.message}</Text>
				<ConfirmationButton secondary>