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
cc @dy is this the expected behavior? I remember you saying we only support a subset of symbols in IE11?
Yes, custom symbols are likely broken now in scattergl. That requires a bit of time to fix, I will give a try.
@dy Any update on this? For now we switched from scattergl to scatter on IE. Is there a chance that this will get fixed?
I can confirm, that this issue is solved :+1:
but, as @etpinard mentioned there are still some warnings in the example above:

@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.
version 1.42.0 and later
marker symbols not work
error: "Path2D" is not defined
@someusersomeuser we close issues when they are fixed in master. This fix will be part of the next release 1.43.0. Thank you.
Most helpful comment
Yes, custom symbols are likely broken now in scattergl. That requires a bit of time to fix, I will give a try.