We've been using a line visualization with Terms aggregation on a keyword field, and splitting the series using another keyword field.
We are getting lines that zigzag:
The zigzags doesn't always happen, it is data dependent.
We don't see zigzags if we change the first aggregation to Descending.
We don't see zigzags if we change this from a Terms aggregation to a Date Histogram.
Any hints on what to do about this would be great.