Why does the tooltip show up on the wrong point in Plotly.js scatter plot?

I posted this question over at the Plotly community here: https://community.plotly.com/t/why-does-the-tooltip-show-on-the-wrong-point-in-scatter-plot/78835. I’m posting it again here to get more responses.

I have a scatter plot. When I hover over the points, the tooltips that show the values show up on the wrong point:

Is this a bug in Plotly? Is there any way to fix it?

Thank you.