[Solved]-HighCharts: Multiple X and Y Axis tooltip doesn't appear (custom formatter)-Highcharts

Thanks for sharing a part of your code. I minimalized your code and it looks like a regression. This issue is already reported on the Highcharts Github issue channel and seems that is in process of working on that: https://github.com/highcharts/highcharts/issues/16004

Mnimalized demo: https://jsfiddle.net/BlackLabel/8jke1yvc/

If you don't need any of the new features use the previous version of the Highcharts: https://jsfiddle.net/BlackLabel/8osj6ch9/

<script src="https://code.highcharts.com/stock/8/highstock.js"></script>