Is there any information about this tooltip? I haven't found any documentation on how to modify or remove this specific tooltip. Additionally, I've found that unlike the axis labels or the point labels, this tooltip is unaffected by an axis' scale unit.
For example. my data is stored with the x axis containing elapsed months, but I set the scale unit to 12 to show the data in elapsed years. The X Axis labels correctly show the values by year instead of month. If I hover over a point, the data point tooltip also correctly displays the value by years. However, if I hover over the X Axis, it displays the value by years when setting up the highlighting.