On a monitor job (and probably elsewhere), clicking "Deploy To" and then selecting Version Control target, you get a default branch, typically master. If you click the link to Create a new Branch from Master - you input the name of your new branch, but the Create Branch button is hidden below the display and you need to scroll down to show it. The Start Comparison button is where the Create Branch button should be, so you end up starting your comparison instead of creating the branch first. Suggesting to change the pop-out window to expand to show both buttons instead of having to scroll to eliminate any unnecessary button clicks.