I've recently upgraqded from an older version (I don't exactly which one, but it was from mid-2020) to 220.127.116.11. In the old version, switching the view to grayscale affected only the 2D viewport. In other words: I was able to have a greayscale view in 2D viewport and "sculpted" 3d view in 3D biewport, which was quite practical.
Now, when I'm pressing the "greyscale" button, it affects immediatelly both 2D and 3D viewports.
Is that a bug, or has it been changed recently intentionally?