Steps to reproduce:
1. Create two Series
2. Delete both Series using Actions->Delete
Both series are deleted. A notification says "The event has been deleted".
Both series are deleted. A notification says "The series has been deleted".
Even better, the notification would says "<N> series have been deleted", but that would be a feature, not the bug this ticket refers to.
Workaround (if any):
Is this still an issue?
This has been resolved a while ago. I therefore close this issue as duplicate.