Lots of crashes here, AC 9.3.1 build 194. Occurs on both Win 7 and Win 10 computers. Happens to me more than other users and seems more likely when I am moving fast, checking something back and forth between past and current note, or between Rx screen and current note (dx for narcs, diabetes supplies and the like). Sudden crash with "AC has stopped working...." Fortunately, consistently when I open AC and log back in it offers to retrieve the last note. Woe is me if I don't act on that when offered, its a one-shot chance. Don't remember it happening as often in version 9.2. Thinking about upgrading to 9.4, but release notes say nothing about a bug fix for such a problem. Also not obviously acknowledged in "known issues."
Not obviously related to the annoying version 9.3 nag screen when trying to log out, "are you sure... There are other windows open... (but there aren't...).