textproc/zathura not reloading on file changes

[Carolyn Saunders]

I've got a strange issue going on with zathura version 0.3.8 and the pdf-mupdf 
plugin. I've got a LaTeX project in vim and it compiles on save. For some 
reason though, zathura doesn't update to reflect the changes. Opening another 
instance shows that it the PDF really did get changed, zathura just isn't 
updating. Zathura's auto-updating for PDFs worked on Linux, what's up here?