Specifying full path to docs directory causes the css to be used. When the base path is supplied pf should either error out or work correctly.
It worked for me for dispatch. Could you clone it and try with your install? https://github.com/dispatch/reboot
It works when it's in preview, but not when html files are produced. Should've been more specific. Sorry. And it's v0.4.1, not v0.4.2.
Just tested in 0.4.2, this works when you specify the full path to the input docs directory, however, that's pretty confusing so I'll leave this open.