[GitHub] [echarts] htr3n commented on issue #15757: Graph tooltips do not show when all input values are null but all will show given at least one valid input

[GitBox <gi...@apache.org>]

htr3n commented on issue #15757:
URL: https://github.com/apache/echarts/issues/15757#issuecomment-922663378


   This is the MWE with at least one non-null value: https://codepen.io/htr3n/pen/JjJLQYr. 
   
   All tooltips are displayed properly with either `-` for `null` or the actual value.


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