Comment 24 for bug 827695

The right way to fix this bug is to use several glyphs to draw the brace e.g. one glyph for the top, one for the middle and one for the bottom. The rest of the brace are two vertical lines that can easily be extended to arbitrary size (e.g. by repeating a glyph for vertical bar or drawing a line). In general, you need to use some specific mathematical fonts that contain the glyphs for the most important stretchy operators e.g. the STIX fonts.

There have been discussion on the LibreOffice mailing list about using STIX fonts as well as supporting the Open Type Math table (here, at least the stretchy variants/constructions would help).

CC'ing Khaled Hosny.