BUG | Black items from Sketchup bug still preset!

Bug from previous version still present. is this being worked on?
exploding components defies a smart workflow.

in attached its a component where each window frame is a block.
there is no difference between the center part which appear black and the rest of the window. they should all be white.
removing the center window from the component, exploding it and regrouping it, solves the issue but ruins the smart component which is duplicated in the project making future changes more time consuming.

please fix this asap…