2-up Vertical jumps when switching to 2nd image

I am using Photoshop 2023 and Windows 10 Pro to compare two images in a 2-up vertical view.  When I click on one image to focus on a particular area, then click in the second image to conduct a comparison, the first image view will jump to another area of the image.  This is keeping me from being able to compare because I can't get the two corresponding areas to show at the same time.  

Help, please.