Not able to quit Syncthing Android when no Wi-Fi

Steps to reproduce:

  1. Disconnect Wi-Fi
  2. Open Syncthing Android
  3. Syncthing disabled message is shown because there is no Wi-Fi
  4. Clicking Exit
  5. Syncthing window closes but Syncthing Android is still running and is not possible to quit.

I must connect to Wi-Fi to quit Syncthing Android.