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kotlinlang

Hi, is this behavior intended in Material? Why is it inconsistent?

```MaterialTheme {
    CompositionLocalProvider(
        LocalContentAlpha provides ContentAlpha.high
    ) {
        Surface(color = MaterialTheme.colors.primary) {
            LocalContentAlpha.current // 0.87 (LowContrastAlpha)
            ContentAlpha.high // 1.0 (HighContrastAlpha)
        }
    }
}```

I guess Surface does it's own

```CompositionLocalProvider(
   LocalContentAlpha provides ...
)```


No, Surface doesn't provide a new `LocalContentAlpha`.  What happens here is that:
• The ContentAlpha.high is recalculated, and because of the content color is light on light theme, it provides high contrast alpha. 
• LocalContentAlpha uses previously calculated alpha when the content color is dark on light theme, it uses low contrast alpha.