I have several records that have multiple attachments. These attachments are all PDF, Word or Excel documents. When I expand the record and click on the first attachment, it opens just fine. However, when I click on the 2nd or 3rd, it opens the first one. The only way to view the 2nd or 3rd is to use the arrows. I attach two screen shots to show you how a record with two documents shows the first one, even if I click on the 2nd one first.
Downloading and deleting works just fine. Another intriguing fact is that if the record contains more than 3 attachments, the process works correctly.