Split Screen Behaviour Questions

If I import a TIF from Photoshop (DCIP3_D65 embedded) the preview looks correct just like in PS. However as soon as I click on the Splitscreen Preview, one side gets washed out even though nothing has been applied yet. If I then start grading the file, the other splitscreen side changes accordingly but still juxtaposes the washed out version which is clearly not my original. Am I missing something but I am simply not able to compare to the orignal, unchanged version - the way it is in PS and when I first import it to color.io ### Your Browser and Device Google Chrome Version 122.0.6261.94 (Official Build) (x86_64)