I don't know if this is a bug, but it feels like one. Roll20 just prompted me to take a quick poll, and when I replied "mix of both" to the "are you a DM or player?" question, it briefly showed a list of numbers (for about a tenth of a second), then closed the poll without further interaction. This occured twice on different computers (I have a free test account for checking player behavior in addition to my pro account, on different emails). I'm using the latest Firefox on macOS on both computers. One possibility that comes to mind is that I have "display popups" turned off, so it's possible it's trying to switch from a slide-out window to a pop-up and failing at that point.
