Using AsyncImagePreviewHandler with rememberAsyncImagePainter for Preview not working

[colinrtwhite]

Discussed in #2851

^{Originally posted by MihaMarkic February 19, 2025}
Using coil 3.1.0 and Compose (obviously).

Trying to use AsyncImagePreviewHandler with rememberAsyncImagePainter for Preview but it seems like painter gets stuck in Loading state (judging from preview).

Relevant code below.
Note that if I substitute FullPhoto with AsyncImage, I see the nice yellow image instead.
Is it me doing something stupid?

@OptIn(ExperimentalCoilApi::class)
@Preview
@Composable
private fun Preview() {
    val previewHandler = AsyncImagePreviewHandler {
        ColorImage(Color.Yellow.toArgb(), 1920, 1080)
    }
    CompositionLocalProvider(LocalAsyncImagePreviewHandler provides previewHandler) {
        FullPhoto(
            "", "Sample"
        )
    }
}

@Composable
fun FullPhoto(url: String, description: String, modifier: Modifier = Modifier) {
    val painter =
        rememberAsyncImagePainter(
            model = ImageRequest.Builder(LocalPlatformContext.current)
                .data(url)
                .build()
        )
    val state by painter.state.collectAsState()

    when (state) {
        is AsyncImagePainter.State.Empty, is AsyncImagePainter.State.Loading -> {
            CircularProgressIndicator(
                modifier = Modifier
                    .width(60.dp)
                    .height(60.dp)
            )
        }

        is AsyncImagePainter.State.Success -> {
            Image(
                painter = painter,
                contentScale = ContentScale.Crop,
                contentDescription = description,
                modifier = modifier
                    .fillMaxWidth()
            )
        }

        is AsyncImagePainter.State.Error -> {
            Text("?")
        }
    }
}
```</div>