Steps to reproduce:
1. Open attached project
2. Build & Run to an Android device
3. Observe the flickering

Expected result: changing the target frame rate should not cause a black screen flicker

Reproduced in: 2019.2.0a11, 2018.3.10f1, 2017.4.25f1

Devices under test:
Reproduced;
VLNQA00218, Samsung Galaxy Note9 (SM-N960U), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630
VLNQA00021, Samsung Galaxy S7 (SM-G930F), Android 7.0, CPU: Exynos 8 Octa 8890, GPU: Mali-T880
VLNQA00117, Google Pixel 2 (Pixel 2), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00261, Samsung Galaxy S10+ (SM-G975U), Android 9, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
Not reproduced:
iPhone 8 Plus (iOS 12.1.2)