I have MS 14 Platinum. For some reason when I change parameters on my 3D anaglyph, the preview window does not show the change. It will show when I make change in the pan/crop. I believe it was working the other day. Could I have changed something?
I have never seen this behavior on VP14, 15 and MSP12 with AMD graphics. Redraw problems with Nvidia graphics cards has been described in other contexts. If you have an Nvidia graphics, I would suspect a problem with the driver, possibly due to a driver update.