Email to Case Attachments not saving as Salesforce Files

Sometimes we have noticed email to case attachments are not saving as Salesforce files.  I have checked all of our settings and settings are accurate.  To be clear, here are the settings I can confirm we have set up correctly:

• If Salesforce Admin enables "Show Email Attachments in Case Attachments Related List" from Setup | Support Settings, then the email attachments are also displayed in the case 'Attachments' related list.
• If Salesforce Admin enables "Save Email-to-Case attachments as Salesforce Files" from Setup | Email-to-Case Settings, then the email attachments are stored as Files and are displayed in the 'Files' related list on the Case record

This does not happen all the time. In fact, I tested this multiple times and the attachments moved into Salesforce just fine.  Here is one example of an email-to-case that did not save attachment as a file. It does not even show up in the attachments section of the email screen in Salesforce. (Sorry I have to cut a lot of the email out but I hope you get the idea):

Is the issue because the image is embedded sent from an iPhone? I can't find any documentation on this being a problem. In fact, I found documentation saying embedded images should get attached in Salesforce (as we are expecting them to). Thanks in advance #Salesforce Admin #TrailblazerCommunity #Help #Email-to-case