scatter3d always selects point 0 on mouse hover

[DirkToewe]

From version 1.34.0 and onward, mouse hover on scatter3d always picks point number 0. Version 1.33.1 works fine. The problem exists in both Chrome and Firefox on Ubuntu 16.04 and Ubuntu 18.04. Here is a small example:

'use strict';
{
  async function main(){
    const data = [
      {
        type: 'scatter3d',
        mode: 'markers',
        x: Array.from( { length: 25 }, () => Math.random() ),
        y: Array.from( { length: 25 }, () => Math.random() ),
        z: Array.from( { length: 25 }, () => Math.random() )
      }
    ];
    const layout = {};

    const plot = document.createElement('div')
    plot.style = 'width: 90vw; height: 90vh'
    document.body.appendChild(plot)

    await Plotly.plot(plot, data, layout)
    plot.on('plotly_hover', event => console.log(event) )
  }
  main()
}

And here is a screenshot of the bug (notice where the mouse is pointing):

[alexcjohnson]

@etpinard @archmoj are you able to reproduce this? It looks fine to me on all browsers on my mac, and on browserstack it seems fine on Windows (wonder when they're going to add Ubuntu???)

[archmoj]

@alexcjohnson I was able to reproduce the issue (visible on Ubuntu). Here is a codepen demo.

[shimwell]

Also came across this using Ubuntu with Firefox and Chrome.

Hovertext appears to show only the first item from the list of markers

temp-plot.zip

[etpinard]

Some potential culprits:

• Panning in mobile devices #2296
• Unlock gl-shader #2293
• Unbind VAO in gl-surface3d #2306
• Glslify #2326

[archmoj]

I tested this on another laptop running Windows 7, and it works well. So it looks the issue might only be related to Ubuntu. Wondering @bpostlethwaite could you please test this demo on Arch-Linux?

[bpostlethwaite]

I can see the same bug - hover shows up on the same point:
Arch-Linux
Chrome Version 71.0.3578.44 (Official Build) beta (64-bit)

[shimwell]

No sure if this helps narrow down the problem but I just uninstalled plotly (python) in Ubuntu version 3.4.1 and installed the newest one 3.4.2 and it fixed this problem for me.
pip uninstall plotly
pip install plotly

[shimwell]

Ah, looks like the bug is still there. Hover points do work initially :-)

but once the user rotates or zooms then the hover points stop working and get stuck on point [0] again

simplescreenrecorder-2018-11-29_08.14.52.zip

[DirkToewe]

Thank You so much @archmoj. Looking forward to the next release.