Same for me.
In my case, I set one pawn to carry some herbal, while they were sleeping. The UI vanshing thing happened as soon as they woke up. The pawn is also stuck on the task. (not moving, task line pointing at the herbal meds in stockpile)
save file
https://www28.zippyshare.com/v/jGh9eHFi/file.html
player.log
https://www28.zippyshare.com/v/8at5hGtx/file.html
In my case, I set one pawn to carry some herbal, while they were sleeping. The UI vanshing thing happened as soon as they woke up. The pawn is also stuck on the task. (not moving, task line pointing at the herbal meds in stockpile)
save file
https://www28.zippyshare.com/v/jGh9eHFi/file.html
player.log
https://www28.zippyshare.com/v/8at5hGtx/file.html