Once dragging some node, the align and ditribution mechanism is properly displaying the alignment lines and also applying "snap" behavior on mouse move.

But rather than mechanism displaying properly, is not really possible to align the nodes in an horizontal manner, it results hard to have the connectors also totally aligned horizontally.

Attaching reproducer video -> JBPM-8555.webm

PS: It does not affects any capability or results in any blocker situation, but results much unfoncortable from the usabilty point of view.

PS: Probably same issue happens trying to do apply vertical alignment, please check it as well.