There is something broken in my PD.
I can't set "custom.css" to load at all.
It is published, I have this file, PD reports with green color that this file exists, but it looks like only "phocadownload.css" is loaded every time.
"Custom.css" is not present in the source of my page, nor any page inspector tool reports it.
When I unpublish all CSS-s in Styles(CSS), phocadownload.css is still loading.
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I have Phaca Gallery also. Styles(CSS) is working as supposed there. All css files are loaded as per their published state.