Thanks for reporting!
The BB two hands in a row obviously shouldn't happen, and it generally doesn't. We looked into that a couple years ago, and back then it was extremely rare. As the code generally does work, we can't prioritize it, unless it's proven to be more common.
As for the two players sitting out, it's a visual bug showing they've been dealt cards, and it wouldn't have shown like that in real-time at the table. This part, combined with the above, is interesting though and if you ever come across something similar, please do report it here 🙂