Bridge won't display transparency on vector .ai files

[Hand Banana]

As you can see in the examples, bridge will not display transparencies in .ai files unless it is rasterized.  I have white vector .ai files that will only show up as a white box.  I can save it as an .eps vector and it will display correctly, but I want to use .ai files.

[Hand Banana]

Here is something interesting, that I'd like to add.   If you save as Illustrator 8, It corrects the problem, but who knows what problems it may cause.