I open a RAW or JPG file using PS or Bridge and when making my adjustments in ACR the popup prompts will stay on the screen after the file is opened in PS. In other words there are a bunch of ACR "yellow" prompts in PS which cover the screen after the file has been opened in PS. Closing out PS will clear out the prompts.
A screenshot is shown.
I am running PS/ACR on a MacPro with Retna although this has been an issue with previous releases of the OS.
Thanks, Jeff. Not the answer that I was looking for but a good work around. I would hope that the development team would fix this one as whatever is causing it in High Sierra may be causing other issues waiting to be discovered. The calm before the storm.