SVG NaN errors when shapes and bgcolor are specified

[zbjornson]

https://jsfiddle.net/hnqe98uv/

This example generates a handful of errors like Unexpected value NaN parsing x attribute because some of the background attributes (_offset, _length) are not set. This only occurs with paper_bgcolor.

[archmoj]

Strangely enough, if one hides heatmap colorbar using showscale: false, the error goes away!

[archmoj]

Here is a minimal codepen.

[archmoj]

This is in fact a regression since v1.44.3.

[archmoj]

Side effect of #3510.

[zbjornson]

Thank you for the fast fix!

[archmoj]

Thank you for the fast fix!

Thanks for your report.
Please note that the official fix won't be available until next patch/minor release.