Hello,
When deleting, you are asked if you really want to delete. To confirm, you must enter the title of the event in the input field. If you do not enter anything in the input field and press the delete button, it will be deleted, which should not be possible.
Really?
I always found it was a pain to key in the whole title 
Yes, repeating the title is a bit too much security for a calendar event, but if that’s how the system is designed, it should work; otherwise, it’s a bug.
The problem persists even in the current version of Mobilizon.
+ To delete an event, the title must be repeated, but this isn’t necessary → A simple yes/no dialog would suffice.
+ After deletion, the event should disappear from the view; currently, it remains, which can easily confuse the user.
Best is you log this bug in the git, if you can, I think we should review the delete process indeed. But the backlog is already quite full, there is no garantee that it will happen very quickly 
