Hi, I've trouble with current build 274. If I disable the "Archivable" option in folder properties, nothing happens and it remains archivable from web interface, the button won't disappear.
it's how HFS has always worked, not only 274.
archivable affects also sub-folders, so one of the folders ABOVE "download" has the flag.
hover your mouse over "download" folder and you should see "archivable [inherited]".
i guess it's the home/root that does it.