Redraw errors after Plotly.update in a scattergl with subplots

[nZo-sp]

https://codepen.io/anon/pen/wxwpgm

In this pen after an amount of time a plotly.update is executed and the visibility for trace 2 is set to false.
The update is executed without clear the gl context.

This issue seems realted to a check inside plot_api.js at line 212:

function drawFramework() {
...
...
    if(!fullLayout._glcanvas && fullLayout._has('gl')) {
            fullLayout._glcanvas = fullLayout._glcontainer.selectAll('.gl-canvas').data([{

the data for each gl-canvas is recreated in any case even if there is already a data with a regl reference.
This leads to the clearGlCanvases that does nothing if regl is not defined.

module.exports = function clearGlCanvases(gd) {
    var fullLayout = gd._fullLayout;

    if(fullLayout._glcanvas && fullLayout._glcanvas.size()) {
        fullLayout._glcanvas.each(function(d) {
            if(d.regl) d.regl.clear({color: true, depth: true});
        });
    }
};

I hope this helps.

[etpinard]

A reference must get lost when calling Plotly.update with the same layout object as the first newPlot.

Calling Plotly.update('myDiv', {visible: [false]}, {}, [0]) works just fine: https://codepen.io/etpinard/pen/QBLVBz?editors=1010 or its react variant

  data[0].visible = false;
  Plotly.react('myDiv', data, layout); 

as in https://codepen.io/etpinard/pen/GBKXYQ?editors=1010 works fine too.

Thanks for the report.