When trying to use the step 'Given I delete "activityname" activity' in my own Behat tests it was failing.

I took a look into the issue and discovered that this step only works if you call the step 'I open "activityname" actions menu' beforehand.

This is unintuitive, not mentioned in the comments, and doesn't work like other steps like 'Given I duplicate "activityname"'.

I am submitting a patch to update this step to take care of the activity menu inside the step itself.