test/runTest/marks/axis-dataset-null.json

[
  {
    "link": "https://github.com/apache/echarts/pull/20777",
    "comment": "fix(tooltip): null value item on category axis should be able to show tooltip",
    "type": "Bug Fixing",
    "markedBy": "Ovilia",
    "lastVersion": "5.6.0",
    "markTime": 1750750525142
  }
]