Cropping preview problems in Acrobat Pro 2023 on Mac

Hi all, just recently when I go to crop a PDF, it’s not working like it has done for quite a few years. 

When I double click on the screen with the crop tool selected the ‘set page boxes’ appears.

When I change the values in ‘top, bottom, left and right’ either by inputting details or clicking on the up arrows you see the crop lines appear in the low-res preview, but they’ve stopped appearing on the main window, so accurate cropping has gone out of the window.

The only way to do it is to drag over the area I want and then change the values to something accurate.

Has this happened to anybody else? Is it me that’s missed something as I’ve spent ages trying to solve this? Has the feature been removed in an update (if so, why)?

If anyone can shed some light on this, I’d massively appreciate it.

Cheers!