Unhandled promise rejection TypeError: "maxbest is undefined"

[brylie]

Issue Summary

When configuring a line chart in the Visualization Editor, I am getting a console error when changing chart configuration under the following circumstances:

• preview chart is < 600px (e.g. with devtools open in right column)
• legend is enabled (disabling legend makes error go away)
• selecting group by category

Unhandled promise rejection TypeError: "maxbest is undefined"
    getAutoRange autorange.js:173
    doAutoRange autorange.js:244
    doAutoRangeAndConstraints subroutines.js:582
    doAutoRangeAndConstraints plot_api.js:344
    positionAndAutorange plot_api.js:327
    syncOrAsync index.js:390
    plot plot_api.js:385
    call registry.js:221
    doAutoMargin plots.js:1809
    supplyDefaults plots.js:477
    plot plot_api.js:152
    call registry.js:221
    layoutReplot subroutines.js:493
    syncOrAsync index.js:390
    relayout plot_api.js:1727
    update index.js:49
    updateLayout utils.js:866
    run es6.promise.js:75
    notify es6.promise.js:92
    flush _microtask.js:18
es6.promise.js:110

Steps to Reproduce

1. Choose Chart Type -> Line
2. Select X, Y, and Group by columns
3. toggle the legend

Technical details:

• Redash Version: b27df21
• Browser/OS: Firefox 67.0, Kubuntu 19.04
• How did you install Redash: development environment with Docker

[kravets-levko]

Thanks! Can you please reproduce this on our preview instance?

[brylie]

Well, using the following query, the grouped line chart doesn't even render. However, there isn't an error in the browser console.

select case
     when Author_Username in ('arikfr', 'ranbena', 'kravets-levko', 'rauchy', 'gabrieldutra', 'kocsmy') then 'Redash'
     when Author_Username in ('jezdez', 'emtwo', 'washort', 'kyoshidajp', 'ariarijp', 'deecay', 'denisov-vlad') then 'Maintainer'
     else 'Contributor'
end as author_group, count(0),
"Date"
from query_105
group by 1
order by 2 desc