If a ticket is created within the Epic you are not prompted to fill out all fields - even when you open up the ticket all of the fields aren't shown in edit / view
If a ticket is created from the blue create button then you are prompted to complete all fields - all of the fields are shown in edit / view
The majority of fields are mandatory and must be populated regardless of how the ticket is created
I'm not sure why the two ways of doing this would appear so differently?