Photoshop Cropping / deleting sections of photos

Are these scans using Image Capture?

What version of macOS are you using?

What version of photoshop are you using?

Are you able to provide an example scan using dropbox or similar?

There have been numerours posts about this for several years:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/scans-cut-off-in-photoshop/m-p/10418804

Let's also make sure we're in a default state and there are no stale settings somewhere:

Restore your preferences using this manual method:

https://helpx.adobe.com/photoshop/using/preferences.html#Manually 

Does it work correctly?

If that doesn't solve it, you can quit Photoshop and put the Settings folder back.

If it does solve the problem, I would like to get the folder of settings to try and figure out what is bad with them.

Can you upload this document to something like Dropbox so we can view it in various applications? 

Thank you so much for the help. I have attached a screenshot. I went to the crop tool and unselected it. Then reset photoshop and it still is showing up like this. It still is showing up fully in preview.

There are two (optional) crop behaviors. One is called non-destructive crop, where you see what's cropped, but the pixels still remain (so you can change your mind). In the crop tool bar options, you can see which is which. Do you see the check box on or off for "Delete Cropped Pixels"?