React partial trace bug

[nicolaskruchten]

This Pen shows an error when adding a single partial trace to an empty plot ... https://codepen.io/nicolaskruchten/pen/odwNwJ

The error is:

plotly-1.37.0.min.js:7 Uncaught TypeError: Cannot read property '0' of undefined
    at Object.m.supplyDefaultsUpdateCalc (plotly-1.37.0.min.js:7)
    at Object.r.react (plotly-1.37.0.min.js:7)
    at HTMLButtonElement.<anonymous> (VM1561 pen.js:34)
    at HTMLButtonElement.dispatch (VM1221 jquery.min.js:2)
    at HTMLButtonElement.y.handle (VM1221 jquery.min.js:2)

[nicolaskruchten]

dupe of #2602, fixed in #2603 :)