Column widths are incorrect after rows created using appendChild method of table body

[gjsjohnmurray]

I have a webview containing a 2-column table whose column widths are defined as ["auto", "10%"]. The table itself is in a collapsible (though this might not be significant) and an action button on the collapsible causes a refresh of the table. The refresh script sets innerHTML of the body element to '', then uses its appendChild method to add the rows. The table headers display correctly (90% of the width for the first header, 10% for the second) but the data rows use 50% for each until I click on the splitter between first and second headers. At that point the widths of the row cells get corrected.

As a workaround I added this to the populating script after all appendChild calls:

 tblFiles.columns = tblFiles.columns;

With this addition, the first time I populate the table with rows their cell widths are correct, but on subsequent refreshes they remain 50% and 50% until I click the header splitter.

I am using 3.4.0