To be clear, my comment referenced another “known issue” that other Airtable users had experienced concerning attachment operations and to point out that there are a number of different types of possible issues.
Relatively speaking, Airtable is aware of at least the one I reported on behalf of more than one client and as you may have noticed in this forum, there are a variety of other issues and workarounds suggested.
The experience you are seeing is not identical to some of the others, and your specific case is not fully documented here. For example…
This is not enough data to state what the true cause is - were these images selected and uploaded when the user of the form was in a separate security context with the origin of the image? This matters greatly if the image is being uploaded by value or by reference. Other factors that play into the reliability of image attachments are image type, size, etc. Examples provide the best evidence for failure.
Because of all these variables, I recommend you file a support ticket with lots of details that prove the system is failing. You might actually discover that you’re not experiencing a bug at all.
