wm on "[Plugin: Autoptimize] Optimize CCS Version 1.9.4"

I finally solved it with a ugly workaround ;-)

Instead of using display in ml-slider that seems to "spill over" in other theme parts in chrome...

display: none  !important;

I now instead hide the text with changing opacity and color settings

background: #ffffff !important;
    color: #ffffff !important;
    opacity: 0 !important;
    line-height: 1px !important;

Finally I can use AO default CCS-optimize settings with no error in Chrome.

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As conclusion I regard this issue as some coding in ml-slider about display settings spills out in chrome. Its a unfortunatly coincidence that AO CSS optimize combine some of the display settings in the code when its read by Chrome browser.