Layout allow resize handle on the full border instead of only the three dots

Heyho!

so in good old dhtmlx5, layout could be resized by the user on the full border. In new version, we have the “three dots” only. I experimented with setting the size of the three dots to 100% height which moves them to the top of the page and allows resizing on the full bar but in some situations, resizing doesnt work at all so i had to undo my changes.
Is there any way to allow layout resizing on the complete border bar?

Unfortunately such functionality is not supported.