If I send an email to the configured inbound email address it correctly creates an activity. I can see the activity in the activities list on my own contact and on the contact connected with the inbound email address. I can open the activity using "view" and then I can click "edit" and make changes.
However if I then used "file on case" to add the activity to a case, and I open up the case and access the activity from there, there is no edit button.
I am an administrator will all permissions ticked.
Is this expected behaviour, a bug or a misconfiguration?
Edits: Added screenshots