Rope allow you to continue movement. If you have to jump, you need to stop movement than take another movement action after the jump to move again.
Golden Rule: Can't perform an action (jump) during another action (movement).
Thanks for the reply! I see and understand your point. I forgot that the rope didn't have the action icon but the key and the jump card do have the action icon. It still seems like the movement is limited but maybe that was by design since there are only 12 rooms.