AlertDialog doesn't show Shape correctly

[serbelga]

Description

The AlertDialog composable shape not showing correctly. It shows a surface behind the AlertDialog background.

val shapes = Shapes(
    small = RoundedCornerShape(24.dp),
    medium = RoundedCornerShape(24.dp),
    large = RoundedCornerShape(12.dp)
)

    AlertDialog(
        backgroundColor = Color.Gray,
        onDismissRequest = {},
        title = { Text("Title") },
        text = { Text("Text") },
        confirmButton = {
            Button(
                onClick = {}
            ) {
                Text("Confirm")
            }
        },
        dismissButton = {
            Button(
                onClick = {}
            ) {
                Text("Dismiss")
            }
        }
    )

Library version
1.0.0-alpha3

OS
Mac OS 11 Big Sur

[rylexr]

Is there any news on this?

[dima-avdeev-jb]

Reproduce in sample:
https://github.com/dima-avdeev-jb/reproduce-bug-with-alert-dialog