After enabling the high contrast dark mode feature preview, I noticed that the blue tint of some user interface elements had become deeper and more saturated. Please tell me that is an undesired side effect; I hate it.
Note: also happening with comment reaction backgrounds.
It seem to impact all themes, such as dark mode, because f.e. some text is more bright/contrast than without the preview.
Also, not sure if that is intentional or not, but the status label of issues and PRs is also different on non-contrast theme.
But I talk more about it here: