closed the 2 decks created, and again, saved them, and then... kaput.... the decks simply disappeared!!!! strangely, i created other decks with other names closed them, saved composition and they are still there! if could it be of any help both of the disappeared decks start with the letter "A".
Good guess, but it seems to be related to if there is another deck still open or not. If you save the comp without any open decks, it corrupts the comp file and weird things happen. In any case, this shouldn't happen, and we'll get right on it.
Another issue, the deck list sorted by alphabetical order seems to work just fine, but... againg, strangely some decks starting with the same letter appear in between another decks starting with oder letter.
There's no sorting for the decks, aside from open or closed state (closed decks are at the bottom). Sorting options are something we still want to do if we get round to it at a later stage. In the meantime, you can search for your deck by typing the name if the browser window is in focus.