horizontal guideline when dragging grid items

[addlistener]

In https://grapesjs.com/demo.html, if you change a flex container to grid, then drag move the 2nd item to the first. The dragging guideline will be a horizontal line. Is there sth I can do to make the dragging guideline a vertical line?

The original flex container can show a vertical line when dragging its children. I guess supporting this feature in grid would be similar?