WebGL traces with marker color array don't propagate that color to hover labels

[alexcjohnson]

Hover labels in these webgl traces with marker.color arrays are always black:

splom:

https://codepen.io/alexcjohnson/pen/rZMEdO

gl3d:

looks like this one is maybe taking the color of the first point for all points?

https://rreusser.github.io/plotly-mock-viewer/#gl3d_marker-arrays

scattergl:

https://rreusser.github.io/plotly-mock-viewer/#gl2d_scatter-colorscale-colorbar

compare to SVG where the hover label matches each point:

https://rreusser.github.io/plotly-mock-viewer/#scatter-colorscale-colorbar

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson

[camdecoster]

I'm opening this back up because it will be fixed by #8027.