I’m unable to replicate this again, but while entering on a speakers profile (Android phone) I got:

FATAL EXCEPTION: main
Process: dev.johnoreilly.confetti, PID: 8326
java.lang.IllegalStateException: LayoutCoordinate operations are only valid when isAttached is true
  	at androidx.compose.ui.node.NodeCoordinator.localToRoot-MK-Hz9U(NodeCoordinator.kt:844)
 	at androidx.compose.ui.node.NodeCoordinator.localToWindow-MK-Hz9U(NodeCoordinator.kt:723)
    at androidx.compose.ui.inspection.inspector.LayoutInspectorTree.parseLayoutInfo(LayoutInspectorTree.kt:505)

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Looks similar: https://issuetracker.google.com/issues/299059964