Created attachment 106544 [details] How different fonts look like with 'Bold'. Problem description: See Image. The boldening only looks strange in OS X, with serif fonts. Steps to reproduce: 1. Try using a serif font, make it bolder. 2. If this isn't really significant, try using something CJK, e.g. copypasta from Wikipedia. THIS ALSO OCCURS IN LIBREOFFICE IMPRESS, AND SO ON. Operating System: Mac OS X Version: 4.2.2.1 release
Btw, this only happens in the UI. Printing and PDF exporting is not affected.
Those fonts (but Source Han Sans) don't have a real "bold" style, so the rendering system fakes the bold style, but it's adding too much weight to it. *** This bug has been marked as a duplicate of bug 71034 ***