The problem is on https://github.com/shutterstock/rickshaw/blob/master/src/js/Rickshaw.Graph.Renderer.Multi.js#L45 where it calls $super instead of group.renderer.domain(data).
Thus if a Renderer overrides domain() it is not called.
In our use case we have a renderer for a different data format (y, yMin, yMax) and Renderer.domain() doesn't know about that....
Fix #377: Ensure multi renderer consults it's sub renderers about how…
… they perceive their domain