RAW Smart objects
If I layer two Raw files as smart objects into a photoshop document with a mask and then open one of the smart objects, as soon as I try to make an adjustment large areas of white appear and cover up my tools and sliders. See photo. If I move the mouse over the tools then they start to reappear. If I open The workflow options then things are returned to normal. They are 42 mega pixel images. I have a new Mac with 24Gb RAM.
What am I doing wrong?

