Thank you Sarahjane_72,
I'm having the same problem and just got off the phone with technical support.
We've tied a few things with no solution. We can't revert back to 14.1.2.
I've uninstalled Illustrator and Photoshop, then reinstalled them both and still I'm having the same problem. Hopefully they'll come up with a solution very soon.
I'm not being productive as i also do this for most of the day.
I have the same problem, but I found a workaround. It may be the same procedure Sarahjane_72 used. It adds two steps to the import: Copy the AI vector art, switch to PS, hit command-N, then, when the Paste dialogue box appears, *first* switch the box's units from pixels to whatever you use-centimeters, inches, picas. *Then* switch the scaling factor, e.g., 72dpi, to your preferred size, e.g., 300dpi, and the image should paste at the correct size. If you reverse the sequence and change the dpi first, it will not work, and the results will be unusable. I have no idea why it works one way and not the other, but switching first from pixels(a scaling factor) to an exact measurement in inches or centimeters seems to make all the difference. I've asked this question in other threads. Nobody has an answer, but I can tell you that this glitch survived a reformatting of my HD to get rid of a malware infection, followed by a re-install of the Adobe CC apps. So it seems to be due to some change in Photoshop. It's a big waste of time and I hope it wasn't consciously added as an "improvement".