diff --git a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/awt/SwingPanel.desktop.kt b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/awt/SwingPanel.desktop.kt
index de44524ea243a..6dba5db86c7e0 100644
--- a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/awt/SwingPanel.desktop.kt
+++ b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/awt/SwingPanel.desktop.kt
@@ -183,7 +183,7 @@ public fun <T : Component> SwingPanel(
  * @param key The unique identifier for the panel container.
  * @param focusComponent The component that should receive focus.
  */
-private class SwingPanelContainer(
+internal class SwingPanelContainer(
     key: Int,
     private val focusComponent: Component
 ): JPanel() {
diff --git a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/scene/ComposeSceneMediator.desktop.kt b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/scene/ComposeSceneMediator.desktop.kt
index e30313c4ea670..926c289b6c33d 100644
--- a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/scene/ComposeSceneMediator.desktop.kt
+++ b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/scene/ComposeSceneMediator.desktop.kt
@@ -23,6 +23,7 @@ import androidx.compose.ui.ComposeFeatureFlags
 import androidx.compose.ui.awt.AwtEventListener
 import androidx.compose.ui.awt.OnlyValidPrimaryMouseButtonFilter
 import androidx.compose.ui.awt.SwingInteropContainer
+import androidx.compose.ui.awt.SwingPanelContainer
 import androidx.compose.ui.focus.FocusDirection
 import androidx.compose.ui.focus.FocusManager
 import androidx.compose.ui.geometry.Offset
@@ -155,6 +156,10 @@ internal class ComposeSceneMediator(
 
         override fun componentAdded(e: ContainerEvent) {
             val component = e.child
+            if (component !is SwingPanelContainer) {
+                // It means that some external component was added to [ComposePanel]
+                return
+            }
             if (useInteropBlending) {
                 // In case of interop blending, compose might draw content above this [component].
                 // But due to implementation of [JLayeredPane]'s lightweight/heavyweight mixing