Looks like this font issue can be triggered (at least for me) by http://wiki.clutter-project.org/wiki/File:COGLBasicsExample.zip , so the problem might be clutter/cogl-related. Also, relationship with 'font glitches' from https://bugs.freedesktop.org/show_bug.cgi?id=29139 is possible.
Looks like this font issue can be triggered (at least for me) by http:// wiki.clutter- project. org/wiki/ File:COGLBasics Example. zip , so the problem might be clutter/ cogl-related. Also, relationship with 'font glitches' from https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 29139 is possible.