Try clearing out your browser's cache/browsing history. When you have done that, close out the browser and re-start it in a fresh session. If that doesn't do it, then try using a different browser. See if the same thing happens.
I tried that and still the same thing, the entire folder attaches. I shouldn't have to use a different browser because until recently, I didn't have this problem using my current browser plus I have no problem with attachments when using my g-mail account.