Muse Mac app can't preview PDFs while iPhone and web work fine
A user reports PDF attachments won't preview in the Muse Mac app (Intel, Sequoia, v8.0) while the same files preview fine on iPhone and web. Their agent already ran a three-way test with differently-built PDFs to rule out the file. The thread points at the Mac app's renderer or sandbox cache, with a clean quit-relaunch and update check as first steps.