I noticed a week or two ago that on the lowest vertical track zoom level, video/image objects lose their little image. I'd assumed it would be seen and fixed, but I see it remains in 12.0.2.2.
Or for better quality: https://dl.dropbox.com/u/4019461/MEP2013-ObjectDisplay.jpg
(In Program Settings > Video/Audio I have 'Simple video object...' checked.)
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Terry, East Grinstead, UK