单击android 8中的OneSignal通知后，打开android应用程序有延迟

I've added oneSignal library to my android project. Everything goes right except when i click on the received notification from one signal server. it takes about one or two minute to open my android app on my device, but emulator works fine. My device is Galaxy s7 with android 8 and emulator uses android 5. I guess my android version is the issue. maybe new features on android 8 does not allow app to open immediately. Any idea? library to my android proj