With the number of Eizo/LightSpace users it seems weird that this is the only time any issues have been reported.
And seeing a difference when you upload a Bypass LUT is totally wrong!
That really can't happen, if the display was already pre-set to Null, via the Null Cube upload function (the tick box).
Seeing a change when a Bypass LUT is uploaded means the display was not set to Null before the upload.
It is really weird that only I got this issue. But I really don't know where I could do any mistake in the process.
And it is not only one monitor or one model. We tested different CG243W and a CG246 with similar results.
When I upload a Nullcube the greyscale looks good, when I upload a Nullcube again, nothing changes (as it should). Then I create a new LUT, don't do any changes to it and upload it to the monitor and the greyscale is messed up. So all possible probe issues and profilesettings are excluded in this test and still it does not work. I don't see where I could do a mistake there.
Do you have a similar Eizo model at hand to test the process yourself?