This meta bug will focus on font selection, bundled fonts, font substitution, etc. but will not have bugs related to the rendering of fonts, which is covered in meta bug 71732.
Font Substitution Indication and Information Bug 61134 - Font substitute name should appear in the font combobox and tooltip Bug 78186 - Show infobar that fonts are missing and list their substitutes Bug 96872 - Make it more obvious that a font has been substituted Font Substitution Table Bug 64509 - CONFIGURATION: Enhance Font Substitution Table Bug 91004 - 'Tms Rmn' font should be substituted for Times New Roman or Liberation Serif Bug 98650 - Fira Mono fonts poor replacement font metrics
Font List Enhancements Bug 66792 - Submenu for font weights/variants Bug 80694 - Indentation for font weights/variants Bug 72944 - Font handling fails to recognize font family and parameters Font List Reduction Bug 77878 - Hidden fonts in Windows 7+ Control Panel not hidden in font list Bug 88416 - Allow hiding fonts from font drop down list in options dialog Bug 91130 - Show a list of fonts based on popular and document fonts
Bundled fonts Bug 79022 - Bundle Source Serif Pro (awaiting italic variant) Bug 80346 - Default to use Libre fonts for Asian and CTL documents Bug 97577 - Use Source Sans Pro as Impress default font Bug 98012 - Replace the Gentium Basic font with Gentium Plus https://wiki.documentfoundation.org/LibreOffice_Fonts_Bundle https://wiki.documentfoundation.org/Fonts
For open-source fonts, you may have a look at http://software.sil.org/products/ .
Embedding Fonts Bug 65353 - LibreOffice embeds fonts that arent used in the document Bug 77753 - When LibreOffice is open, it wont load embedded fonts (Windows)
Base meta bug for all font related issues, but most bugs should fall under one of the sub-meta bugs that deal with * how fonts render in a document (bug 71732) * rendering of font previews (bug 108736) * fonts available in the font list (bug 113638) * font formats that are supported (bug 113639) * font substitution behavior and information (bug 103342) * fonts that are bundled with libreoffice (bug 113305) * font preferences per locale (bug 114750)