Hi, I've been stuck on this issue for a while now. My aim is to copy the bottom crosshair and show it on top as well.
Please check out this fiddle
Some workarounds i found.
- Make a new hidden series and link the x Axis to it. [Problem with this is it's adding bloat and slowing down the chart]
- Make snap to false on the top axis. [This works but looks very weird as the top and bottom need to snap since we strip out weekend data https://jsfiddle.net/kq80caeo/27/]
If you need anything else let me know!