Reproduction steps:
1. Open the attached project;
2. Build the scene "Test" on a device;
3. Open the built app;
4. Move the slider and listen the sound;

Actual result: the volume does not change while changing the value of a slider.
Expected result: the volume should react to the value of a slider.

Note: everything works fine in Editor. Also, the scene built on Standalone works fine too. Audio Plugin was created by the user.

Reproduced with: 5.5.4p2, 5.6.3f1, 2017.1.0p2, 2017.2.0b5

Note#2: an app which is built with 2017.3.0a2 immediately crashes.

Devices under test:

Samsung SM G903F*, OS:6.0.1, CPU:armeabi-v7a, GPU:Mali-T720, Build:samsung/s5neoltexx/s5neolte:6.0.1/MMB29K/G903FXXU1BQC1:user/release-keys

Motorola Moto G (4)*, OS:6.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 405, Build:motorola/athene/athene:6.0.1/MPJ24.139-63/64:user/release-keys