Stacked graph not properly handling null values
Filing a bug report? Please include the following:
Currently I have two series of data that I am displaying as a stacked line graph. The data looks similar to this: [[null, null], [1, null], [null, null], [null, 1], [1, null], [null, 1], [null, 1], [null, 1]]
where the first value represents one series and the second value represents another. Currently the graph looks like the following when stackGraph is true.

I would expect that the second(orange) series would move down and show at value 1 on the y axis since the first series had no values at that point.
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Browser and Operating System that exhibit the problem Currently using Chrome.
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Version of dygraphs that you're using: 2.1.0
Does it work as expected if you use NaN instead of null? See https://dygraphs.com/data.html#array