When opening and closing containers, I sometimes get an "unhandled exception" and a big red-X appears across the canvas or overview. If I close and reopen Alteryx the issue is gone, at least for awhile. Looking at the error logs, they all say "Object reference not set to an instance of an object". There doesn't seem to be a consistent pattern (different containers in different flows...) although it seems to occur less if I navigate slowly (ie pause between closing one container and opening another). Any suggestions appreciated.
