If an item is submitted through submit.escholarship.org and categorized as "Non-Textual," it may not display correctly on eScholarship when the primary file is a PDF (posters commonly fit into this category).
While we work to correct this issue, a temporary workaround is to re-categorize the item as "Paper / Article." To do so:
Non-textual items are now displaying correctly. The above workaround is no longer necessary.