See my comment #17; in the case of PDF (and presumably other formats) printing is handled by the plugin itself (and works), but preview isn't. So for full-page plugins I feel that print preview should be disabled in the UI.
See my comment #17; in the case of PDF (and presumably other formats) printing is handled by the plugin itself (and works), but preview isn't. So for full-page plugins I feel that print preview should be disabled in the UI.