I have only two issues with Dexpot:
* Windows often get cloned to other workspaces when "walking through them"
* Desktop Preview just "goes away" many times a day
I've posted about the first problem several times, but I'm resigned to that. I would guess that it's probably due to my slow laptop making race conditions more likely to occur.
I haven't pursued the second problem very much, so I figure I'll give this a try. When this happens, it's at the point when I move to another workspace. It never happens when I'm just sitting on a workspace. The workaround is to select "Desktop Preview" twice from the menu. This indicates that Dexpot thinks the preview window is displaying, so the first selection turns it off, and the second one turns it on again.