No, we always make sure we maintain backwards compatibility, when the SDK allows that.
If Eizo have broken their SDK, such that backwards compatibility is not possible, that is not something we have any control over.
So again, that is an Eizo issue, not a LightSpace one.
Really sorry, but this still looks to be an Eizo issue, if there really is one, based on the fact you said you had tested the CG243W and a CG246 with similar results, and we tested our CG246 and got the correct results, as I posted previously.

Steve
Steve Shaw
Mob Boss at Light Illusion