Comment 10 for bug 1853617

"The text with exactly size 8 is properly rendered" is no longer true :)
The most interesting is that the gaf exports to pdf correctly ..
 we probably have a catch.
I modified a bit fprintf:
 fprintf(stderr, "'%s', y_lower: %.3f, descent: %.3f ",
 pango_layout_get_text(renderer->priv->pl),
 (double) y_lower / PANGO_SCALE, (double) descent / PANGO_SCALE);
 fprintf(stderr, "[%.3f %.3f %.3f %.3f]\n",
 (double) logical_rect.x / PANGO_SCALE,
 (double) logical_rect.y / PANGO_SCALE,
 (double) logical_rect.width / PANGO_SCALE,
 (double) logical_rect.height / PANGO_SCALE);
run .. and found nothing yet :/
The attchment contains pdf and stderr form gaf and gschem.