Showing splash screen crashes if the activity is in the process of finishing

Showing of splash screen is attached to js event "onbeforeunload". When application being closed by pressing "back" button, we gots:

FATAL EXCEPTION: main
Process: scat.su.calltaxi, PID: 16999
android.view.WindowManager$BadTokenException: Unable to add window – token android.os.BinderProxy@5d0142d is not valid; is your activity running?
at android.view.ViewRootImpl.setView(ViewRootImpl.java:567)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:310)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:86)
at android.app.Dialog.show(Dialog.java:326)
at org.apache.cordova.splashscreen.SplashScreen$5.run(SplashScreen.java:318)
at android.app.Activity.runOnUiThread(Activity.java:5558)
at org.apache.cordova.splashscreen.SplashScreen.showSplashScreen(SplashScreen.java:281)
at org.apache.cordova.splashscreen.SplashScreen.onMessage(SplashScreen.java:189)
at org.apache.cordova.PluginManager.postMessage(PluginManager.java:312)
at org.apache.cordova.CordovaWebViewImpl.postMessage(CordovaWebViewImpl.java:377)
at org.apache.cordova.splashscreen.SplashScreen$3.run(SplashScreen.java:169)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5517)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)