This issue only affects some types of PDF.
We have had reports from some users that they have experienced issues when trying to open a PDF in Blackboard. The PDF opens but only the first page appears and a log in box also appears on the page.
We have looked into the issue and there is a known issue with Chrome where the “in site” cookies do not pass to PDFs when they open. What this means is that the PDF does not know the student is logged into Blackboard.