I had multiple party memebers get incapacitated. They started rolling their death saves, and got 3 successful rolls quite quickly. But after the bar filled up with success, it just reset and they didn't get revived on their own. I'm assuming that's a bug at the moment? As the only way I can pick up my party memebers is to use up my action point to save them (only to be one hit again before they get a chance to move haha).
Failed death throws seem to work just fine though, instantly killing them when it reaches 3, so that part is not an issue heh.