Hey, I've been using this tool to play a prog series with two friends, and it's been really helpful. Today, however, we all got the same bug: All saved decks get replaced by white cards with no info, and we have to press the "Toggle Collection" to see our cards. We can create new decks, and the UI is fine then, our decks are still saved in the folder, so we haven't lost anything, but I still wanted to report this bug.