beta – macOS Big Sur : Menubar is Greyed out

after installing MacOs Big Sur, I disabled transparency from Accessibility and I noticed that Colour of dock is looking perfectly fine but menubar was greyed out and Accent was also changes to black as you can see in picture. And there is another issue. checking in ‘reduce motion’ option in Accessibility causes menubar to flash in full screen mode(without touching trackpad or keyboard).

greyed out menubar