How to reproduce:
1. Open attached Unity project
2. Load "StartScene" scene
3. In Menu press Android -> Build Asset Bundles
4. Enter the Play mode
--notice, there is "Hello World" text below the cylinder
5. In Menu press Android -> Build APKs
6. Install Builds/HashAppended/HashApeended.apk to a device
--notice there is no "Hello World" text below the cylinder. Errors pop up in the logcat.

Errors:
Could not produce class with ID 102. Unity: This could be caused by a class being stripped from the build even though it is needed. Try disabling 'Strip Engine Code' in Player Settings.
Could not produce class with ID 136. Unity: This could be caused by a class being stripped from the build even though it is needed. Try disabling 'Strip Engine Code' in Player Settings.
Could not produce class with ID 128. Unity: This could be caused by a class being stripped from the build even though it is needed. Try disabling 'Strip Engine Code' in Player Settings.

Reproduced with: 2017.4.27f1, 2018.4.0f1, 2019.1.2f1.
Not reproduced with: 2019.2.0b1, 2019.3.0a2 (building results in errors).

Devices under test:
Reproduced on:
VLNQA00134, Samsung Galaxy S8 (SM-G950F), Android 8.0.0, CPU: Exynos 9 Octa 8895, GPU: Mali-G71
VLNQA00224, Samsung Galaxy A5(2017) (SM-A520F), Android 8.0.0, CPU: Exynos 7 Octa 7880, GPU: Mali-T830
VLNQA00015, Samsung Galaxy Note8 (SM-N950W), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00218, Samsung Galaxy Note9 (SM-N960U), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630
VLNQA00173, Xiaomi Redmi 6 Pro (Redmi 6 Pro), Android 9, CPU: Snapdragon 625 MSM8953, GPU: Adreno (TM) 506
VLNQA00115, Sony Xperia Z3 (D6603), Android 6.0.1, CPU: Snapdragon 801 MSM8974AC, GPU: Adreno (TM) 330
VLNQA00231, Huawei HUAWEI Mate 20 Pro (LYA-L29), Android 9, CPU: HiSilicon Kirin 980, GPU: Mali-G76
VLNQA00233, Meizu - (PRO 6 Plus), Android 7.0.0, CPU: Exynos 8 Octa 8890, GPU: Mali-T880
VLNQA00266, Xiaomi Mi A2 (Mi A2), Android 8.1.0, CPU: Snapdragon 660, GPU: Adreno (TM) 512
VLNQA00078, Motorola Nexus 6 (Nexus 6), Android 7.1.1, CPU: Snapdragon 805 APQ8084AB, GPU: Adreno (TM) 420

Notes:
In Builds/Android Folder there is another folder with Standard.apk. Notice that this one is bigger and after installing it to a device there is "Hello World" text under the cylinder.
"Hello World" Text appears in the app when building apk after disabling "Strip Engine Code" in Player Settings.