Hi Olivier
To help you, please detail the dark minimal glass version you are using ( anniversary / creator update ) and post some screenshot , it be easier to find what's going on
otherwise send mess on my youtube channel ( the real yoda san ) in public com
note: for transparency don't forget I'm using tricky way to get transparency beside aeroglass with qttabbar , so you can check in qttabbar options if transparency level isn't too high