Whenever I download a PDF from my university dashboard, macOS doesn't recognize it as PDF even though the file extension is marked as .pdf.
Compatibility Mode resolves the issue, but that's not the desirable outcome I guess.
Extensions used:
iCloud Keychain
uB Origin
Bypass Paywalls Clean
Tampermonkey (but without active script)
PDF.js has always been on.
Orion downloads the file as openable PDF document, instead downloads a 22KB file (maybe HTML file).
Version 0.99.126.4.1.3-rc (WebKit 618.1.7)
Sonoma (14)