Scatter plot should look like a grid of circles, or symbols.
Scatter plot example appears to be trying to connect the dots:

We are comparing Chart.js with a couple of other charting libraries right now, so are relying on examples to make an informed decision.
Should be as simple as adding showLine: false to those datasets. The scatter chart is built on top of the line chart hence why the line is there
+1. Encountering this type of rendering was very unexpected, and I feared that 2.6.0 had more rendering bugs than I had thought...
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Should be as simple as adding
showLine: falseto those datasets. The scatter chart is built on top of the line chart hence why the line is there