Datatable - leftsplit Vs. resize

Hi,
when you have a datatable, with leftsplit property (e.g. leftsplit:2) if you manually resize columns, highly width, headers goes in the second line.
This snippet http://webix.com/snippet/9164fec0 explain the trouble when you resize first column.
Why?

Hi,

I can confirm the issue.
It will be fixed in the next build.