Load local data file example not showing if using autoColumns

[stavnskov]

Describe the bug
I am trying to follow the example http://tabulator.info/examples/4.7?#file-load data from local JSON file seems to be loaded but does not show content in table

Tabulator Info*
Version 4.7.1 on Chrome (also tried Edge and Internet Explorer)

Working Example
This seems to be a general problem with either the example or the Tabulator library. See someone else SO post here https://stackoverflow.com/questions/62481271/tabulator-4-6-load-table-data-from-local-file-fails-to-post-json-file-to-tabu

JSFiddle: https://jsfiddle.net/3pwymsot/
Example JSON: [ {"name":"Billy Bob", "age":"12"}, {"name":"Mary May", "age":"24"}, {"name":"Christine Lobowski", "age":"15"} ]

To Reproduce

1. Click on open file
2. Choose a simple JSON file

Expected behavior
Data should be shown in table.
Actual: Judging from scroll bar and that the placeholder text is replaced it seems that data is loaded, but it is not shown.

Screenshots

Desktop (please complete the following information):

• OS: Windows
• Browser: Chrome, IE, Edge
• Version: 10

Smartphone (please complete the following information):

• Device
• OS
• Browser
• Version

Additional context
UPDATE: It seems to be a problem with autoColumns. If I use the below it seems to work:

//autoColumns:true,
columns:[
    {title:"Name", field:"name", sorter:"string", width:150},
    {title:"Age", field:"age", sorter:"number", hozAlign:"left", formatter:"progress"},
],

[olifolkerd]

Hey @stavnskov

Thanks for the info.

I have pushed a fix to the master branch and will include it in a patch release later today.

Cheers

Oli :)