To reproduce:

1. Open the attached project (IncorrectApplicationIdentifier.zip)
2. In the Build settings, make sure that the platform selected is Android
3. Open the Player settings and open the PC, Mac & Linux settings tab
4. Press Tools -> Log Identifier menu item
5. In the console, observe that the PlayerSettings.applicationIdentifier matches the standalone identifier, not the android identifier

Expected: PlayerSettings.applicationIdentifier reports the application identifier for the currently selected build target, which in this case is Android

Reproduced in 2017.2.3f1, 2017.3.2f1, 2017.4.4f1, 2018.1.2f1, 2018.2.0b5, 2018.3.0a1