Preview fails to render when there's a SwingPanel

[asapha]

The preview pane is stuck on "Rendering preview" when trying to preview this

@Preview
@Composable
private fun TestPreview() {
    SwingPanel(
        factory = { JTextArea("Hello world") }
    )
}

Gradle dependency: 1.0.0-alpha3 Plugin: org.jetbrains.compose.desktop.ide (1.0.0-alpha4-build315)

From Intellij:

IntelliJ IDEA 2021.2 (Ultimate Edition) Build #IU-212.4746.92, built on July 27, 2021 Runtime version: 11.0.11+9-b1504.13 x86_64 VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o. macOS 11.5.1 Kotlin: 212-1.5.10-release-IJ4746.92