Accessing webgl context in canvas source breaks map raster in specific hardware setup

[gpbmike]

mapbox-gl-js version: 39.1

Steps to Trigger Behavior

1. Be on a very specific hardware setup (see notes)
2. Add canvas source / layer
3. Access webgl context of added canvas

Expected Behavior

Canvas layer is added to map.

Actual Behavior

Mapbox raster layers vanish.

Notes

I built a nice plotty layer to throw on the map and it worked everywhere except on my product manager's laptop. 😢 Older hardware worked. Newer hardware worked. His specific hardware failed.

Specific hardware:

I was able to procure a laptop with the same specs from IT to do some testing. Accessing the webgl context of the canvas layer being added to the map triggers the weird behavior.

Reduced test: https://codepen.io/gpbmike/pen/qXNPOM

Other webgl applications run as expected.

I'm hoping that there's an another developer out there with this specific setup that can help out.

[jfirebaugh]

Duplicate of #4262.