Missing border on datatable in form

I have a datatable as part of a form in a modal window used to sort a list into a custom order. I have borderless set to false. But there is no border on the left side. See https://snippet.webix.com/5avsbisp for a sample.

What do I need to do to have a border on all sides of the datatable? Thanks!

I figured it out. Putting a margin on either side (using col and width) shows the border on the left.