Issue (aka bug):  File compatibility and alpha channels

When I enable file compatibility mode on photoshop (so that previews and thumbnails show up), the thumbnail and preview will be wrong when there's an alpha channel in the channel palette. Specifically, the thumbnail will be masked by the top-most alpha channel in the channel palette. Consequently, there is sort of a work-around--if you create a plain white alpha channel and make sure it's the top-most alpha channel in the palette, then the preview and thumbnail come out fine. Luckily, this requires negligible extra memory.
If there's no alpha channel or I don't save alpha channels, the preview/thumbnail looks fine.
In spite of the work-around, a fix would be nice. It'd also be nice if there was a way to have a preview/thumbnails in Finder without the large memory penalty of compatibility mode.
Bart

Yes, everything in Bridge works great. However, the search function in Bridge is SLOW and a bit flaky (same problem on the Windows side as well) so I like to use spotlight instead for searching. Additionally, I like to use iPhoto to create collections of images that will contain photoshop files as well as others.
For now, it is workable for me to just use compatibility mode in photoshop and make sure all images with alpha channels have an all-white alpha channel at the top of the stack. The file size penalty is tolerable for now. If Apple ever fixes things on their end, then it's a simple script to convert my psd files back again.
Bart

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