I receive notifacations of full tavern a couple of minutes before it actually full. I start the game and realize that its 3 minutes (for example) to go. Pretty funny but a bug. Happens on regular basis. I guess its some donation issue.
Yeah it happens when after a battle you click the recruit button and then while they are recruiting you donate troops and click the auto recruit button for those guys. The notification timer is still set for the original post battle crew recruitment.