So topic says it all. It happens even with original sasc version, and happens on at least OS4 and MORPPHOS. From time to time (i think 20-30% of runs), when dopus5 screen appears, not every icon are visibly on desktop. Some of them are, some of them not. So you need to move by any of window over that empty places, to make them redraws itself. Pretty possible it can be related to how and when backdrop image/icons are drawn, and just some icons draws faster than backdrop.
I can't reproduce the problem on OS4. All of my icons are OS4 native. A lot has changed since this was reported. Does the problem still exist?
Due to lack of response and the age of this ticket I'm closing it. If the problem still exists it can be reopened.