Could be also related to fontconfig-config 2.8.0-3ubuntu9.1 and libfontconfig1 2.8.0-3ubuntu9.1 which is not used by mupdf which has no issues displaying the document, but used by xpdf (this bug) and evince, epdfview, okular and zathura (Bug 1111429).
Could be also related to fontconfig-config 2.8.0-3ubuntu9.1 and libfontconfig1 2.8.0-3ubuntu9.1 which is not used by mupdf which has no issues displaying the document, but used by xpdf (this bug) and evince, epdfview, okular and zathura (Bug 1111429).