Graphite Fonts Display issues

We were having some issues to display correctly a graphite font.
As a workaround we added Font Feature “cv01=1”.
The issue is that in the Header and in the Cross References Pop-up windows the font is still not displayed correctly. Is there any workaround for this ?

See attached picture. Green = Correct (2 dots below), Red=wrong (one circle below).

Are the quotation marks needed when specifying a font feature in SAB? I am trying to specify a font feature and not sure where I am going wrong. Thanks.