Created attachment 120655 [details] an example of the bug the math programm in LibreOffice don't work correctly, in this version the signs, don't show correctly
Please download and install the font from http://cgit.freedesktop.org/libreoffice/core/plain/extras/source/truetype/symbol/opens___.ttf?h=libreoffice-4-4-6 *** This bug has been marked as a duplicate of bug 76239 ***