ClearBackStack is crashing when any modal is open inside webView

[KarishmaAlignable]

When i am cleringBackStack normally it works correctly. but if in any webView a modal/dialog is open and then i clear back stack on click of a button it crashes with below error
java.lang.IndexOutOfBoundsException: getChildDrawingOrder() returned invalid index 1 (child count is 1) at android.view.ViewGroup.getAndVerifyPreorderedIndex(ViewGroup.java:2125) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4299) at android.view.View.draw(View.java:22538) at android.view.View.draw(View.java:22396) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at androidx.constraintlayout.widget.ConstraintLayout.dispatchDraw(ConstraintLayout.java:1994) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at androidx.fragment.app.FragmentContainerView.dispatchDraw(FragmentContainerView.kt:222) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at androidx.fragment.app.FragmentContainerView.drawChild(FragmentContainerView.kt:235) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at androidx.fragment.app.FragmentContainerView.dispatchDraw(FragmentContainerView.kt:225) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at androidx.constraintlayout.widget.ConstraintLayout.dispatchDraw(ConstraintLayout.java:1994) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at android.view.View.draw(View.java:22394) at android.view.ViewGroup.drawChild(ViewGroup.java:4541) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4302) at android.view.View.draw(View.java:22538) at com.android.internal.policy.DecorView.draw(DecorView.java:848) at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:4542) at android.view.ViewRootImpl.draw(ViewRootImpl.java:4445) at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:4144) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3391) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2182) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8730) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1352) at android.view.Choreographer.doCallbacks(Choreographer.java:1149) at android.view.Choreographer.doFrame(Choreographer.java:1049) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1333) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:233) at android.app.ActivityThread.main(ActivityThread.java:8010) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:631) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:978)

[KarishmaAlignable]

Below is my clearBackStackCode
fun clearBackStack(onCleared: () -> Unit = {}) { if (navController.previousBackStackEntry == null) { onCleared() return } while (navController.backQueue.size > 2) { navController.popBackStack() Log.d("poping_stack", "stack size ::" + navController.backQueue.size) } onCleared() }