Include Event.is_public in Event.copy_data_from

src/pretix/base/models/event.py

@@ -275,6 +275,7 @@ class Event(EventMixin, LoggedModel):
         from ..signals import event_copy_data
 
         self.plugins = other.plugins
+        self.is_public = other.is_public
         self.save()
 
         category_map = {}