There is an original explanation of this problem with data examples [here](https://github.com/elastic/kibana/issues/48385#issuecomment-544495079), and a followup comment on the problem [here](https://github.com/elastic/kibana/issues/48385#issuecomment-545504259). The overall issue is that annotations should still be rendered if their values match the max value of the dataset, and that max value is `0`.
There is an original explanation of this problem with data examples here, and a followup comment on the problem here.
The overall issue is that annotations should still be rendered if their values match the max value of the dataset, and that max value is
0.