Hover text not showing for all axes traces

Hi,
I need create a plot with multiple scatters with different yaxis, but I found only hover text for lines bind with y2 will display, hover events seems cannot be triggered for first yaxis.
Anyone had occurred same problem?

Example can be found https://codepen.io/zhaolian-zhou/pen/WaojoY

You need to set yaxis2.overlaying: 'y' -> https://codepen.io/etpinard/pen/qJRzgo

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