Thank you, Brenda Rossetto, for sharing this new Quick Tip!
When you want to attach files to a case, adding a note to the case has just been "the way things work" in Sugar for a very long time. Starting in Sugar 11.2, you can now attach files directly to the case itself using the new Attachments field! This makes them visible immediately without having to open a note and also makes it easy to gather all attachments in one place. For more information, check out the Cases documentation.