This problem has been coming and going for a while. If I'm opening a .CR2 file in Camera Raw the interface turns white whenever I drag a slider, push a button or basically do any editing what so ever. If I tab out it goes back to normal, but as soon as I drag any slider etc. it turns white again. If I move my mouse over the sliders and buttons they appear again but the 'framework' around the photo and menus/sliders/buttons remain white as in this screenshot: https://imgur.com/q8D5Wfm
I've tried changing my photoshop settings but nothing seems to work. It got worse with the latest update as well, before it wasn't as frequent as this. I'm using a dual screen setup (iMac/Eizo) and I've got all the latest updates.
Anyone seen this before or have any ideas what causes it?