Error when adding a new trace to a plot with Plotly.react

[tropys]

After updating to plotly.js 1.37.0, I'm getting the following error when adding a trace to a plot that already has at least one trace. This then seems to sometimes cause the trace to not render.

Error while plotting: TypeError: Cannot read property '0' of undefined
    at Object.plots.supplyDefaultsUpdateCalc (plotly.js:143231)
    at Object.exports.react (plotly.js:123205)
    at factory.js:100

Recreated with codepen: https://codepen.io/steph_curried/pen/gzWBQE
I had to use chrome dev tools console, codepens console does not show the error message.

[alexcjohnson]

Thanks for the report! I'll fix this, came in with #2577 I think.

[etpinard]

Thanks for the very clear report @tropys !