Yes, we have discovered an issue that we are now discussing with Eizo.
This issue may/may not be your problem, but it probably is.
What we would presently suggest is testing the calibration in a pure RGB 444 image path, as well as YUV 422.
You will likely see very different results.
(There is a menu to force the Eizo into PC/RGB mode which you may need to locate/use)
We cannot presently comment further, until Eizo finalize their response to us.
But, this is not a LightSpace problem.
You can 'test' the LUT you generate via 'Active LUT' within LightSpace to see if the LUT is correct before uploading into the Eizo, as that bypasses the Eizo issues.
Mob Boss at Light Illusion