firefox on windows 11 - rendering PDFs as black boxes

I recently upgraded to a new laptop running Windows 11, and have run into an odd bug that's specific to firefox. If I try to view a PDF or a document in Google Docs on Firefox, it renders as solid black pages. The exact same web addresses or local PDF files show up fine in Edge or Chrome.

Has anyone else run into this issue, know what might be causing it, or have a fix for it?