Hope,

i think what they're saying is that in writing up a description underneath an image they're posting in the galleries, that the text box area they type in looks like everything will post alright. but then, upon posting, all the HTML coding they put in is nullified and non-functional, essentially stripped away in the process of the upload. also, if you if go to the galleries, pretend that you're going to upload, you'll see that the box for image descriptions has no formatting abilities built into it [, ie. it lacks even this new MarkDown coding ability], maybe leading folks to think that HTML will be translated the way it used to as the old site's upload description box was also just a big old empty area devoid of any form of fancier formatting. some folks grew very accustomed to being able to use HTML in their image descriptions.

the text area for viewers to comment in actual does utilise MarkDown ability/functionality though.