When trying to drag controls, such as color ramp elements inside of nodes, the input will go to the node resizing, rather than the item you are trying to interact with.
The problem is that the active area for resizing the node is too wide and in the wrong place. As you move your mouse from outside toward the node, it doesn’t change into a “resize” cursor until it hits the middle of the outside border. And then works as resize for too wide of an area inside the node content area.
The active area for resize should be narrower and be horizontally centered at the edge, so should work the same distance on either side of it.