Yes, unfortunately, this is a known limitation of Airtable.
Be sure to send an email to support@airtable.com to request that this functionality be improved in the future.
In the meantime, the workaround for this is to make your primary field in the linked table a formula field that shows you all the information that you want to see.
The other workaround for this is to use Fillout’s advanced forms for Airtable, which solves this problem by letting you choose which fields (including attachment fields) that you’d like to see when selecting a linked record.