Lady Saxophone
The marketplace preview window has been known to be faulty with Animated items -- most likely due to the fact that it was made long before Astras existed and never properly updated to reflect current Astra layerings. It is recommended that you try animated items on in your Dressing Room instead in order to see how they will look.
This problem occurs even after I save my avatar. It appears in the dressing room, on the header of Gaia, and in the forums, etc, etc. It's not just my avi either. I see the black wonky stuff even on other people's avatars in the forums. In other words, it's not just in the MP. I took the screen shots in the MP because the preview there is a smaller size than the dressing room, but it does the same thing
everywhere, which is why I reported it. I started noticing it a little over a month ago. I patiently waited to see if it would go away, but it hasn't. I've asked friends if this happens to them, but DarkAngel166 was the first person I know of other than me to have this issue.
It makes me wonder if it's caused by my browser settings or something like that. I posted this thread first in the Avatar Talk forum, but when I showed Meromictic, she kindly moved it to the Bug forum.