IE11: scattergl: problems with marker symbols

[mojoaxel]

We have problems with custom marker-symbols in a scattergl chart.

Chrome and Firefox are OK.
This seems to be only a Problem in IE (11.0.9600.19002)

WEBGL11042: INVALID_OPERATION: useProgram: Program not linked

Live Example: https://jsbin.com/zokekob/edit?js,output

[etpinard]

cc @dy is this the expected behavior? I remember you saying we only support a subset of symbols in IE11?

[etpinard]

related #2750

[dy]

Yes, custom symbols are likely broken now in scattergl. That requires a bit of time to fix, I will give a try.

[mojoaxel]

@dy Any update on this? For now we switched from scattergl to scatter on IE. Is there a chance that this will get fixed?

[etpinard]

#2683 appears to have fixed rendering, but I noticed a few console warning in #2863 (comment), that should get addressed before closing this issue for good.

[mojoaxel]

I can confirm, that this issue is solved 👍
but, as @etpinard mentioned there are still some warnings in the example above:

[dy]

@etpinard just figured out. That error is actually just a log in console, there is no way to turn it off. That piece of code feature-detects WebGL. I can hardcode browser detection instead, to mute the log for IE11 specifically.