https://bugs.freedesktop.org/show_bug.cgi?id=110214
--- Comment #80 from Michel Dänzer michel@daenzer.net --- (In reply to Diego Viola from comment #79)
Which might indicate this being a freetype problem?
No. If it was a FreeType problem, R600_DEBUG=nodpbb or MESA_EXTENSION_OVERRIDE="-GL_NV_texture_barrier" couldn't work around it.
Changing the xterm configuration just happens to avoid the problem somehow.