It can't even copy paste normal text properly (the bug has been there for 8 years now: https://bugzilla.mozilla.org/show_bug.cgi?id=810636). Line breaks are ignored and words are just smushed together instead. Ever since I switched to FF it has been my biggest annoyance, on Chrome this stuff just works.
The best alternative on windows is PDF-XChange, fairly obscure but extremely feature-rich.