Use destroyInvite()

src/client/ui/templates/party/party.js

@@ -101,10 +101,8 @@ define([
 
 		onGetParty: function(party) {
 			// Destroy invite frame if you join a party
-			if (this.invite) {
-				this.invite.el.remove();
-				this.invite = null;
-			}
+			if (this.invite)
+				this.destroyInvite();
 
 			var container = this.find('.party .list')
 				.empty();