If I hold command before I move a node it only constrains it within a certain vertical mouse movement range. If I move the mouse beyond that range the node will move vertically. If I hold command after I’ve started moving horizontally, it really does stop vertical movement completely. However, if I happen to move it vertically first, command will lock the movement to only vertical. I find the behaviour is a overly complex and very fiddly. I wish it just completely locked it to horizontal with command and completely locked it vertical with option. That would make automation editing so much faster and less fiddly. Or maybe I’m doing something wrong?