Repro steps:
1. Open QA attached project "repro_1144830"
2. Set the Graphics API to Vulkan in the Player Settings
3. Build and Run on Android
4. Observe the screen

Actual: notice that images after the splash screen appear after a few seconds

Reproducible with: 2017.4.26f1, 2018.4.0f1, 2019.1.1f1, 2019.2.0a14, 2019.3.0a1

Reproduced on these devices:
VLNQA00262, Sony Xperia XZ Premium (G8141), Android 9, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00117, Google Pixel 2 (Pixel 2), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00270, Samsung Galaxy S10e (SM-G970F), Android 9, CPU: Exynos 9 9820, GPU: Mali-G76
VLNQA00015, Samsung Galaxy Note8 (SM-N950W), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540

Didn't reproduce on these devices:
VLNQA00021, Samsung Galaxy S7 (SM-G930F), Android 7.0, CPU: Exynos 8 Octa 8890, GPU: Mali-T880
VLNQA00078, Motorola Nexus 6 (Nexus 6), Android 7.1.1, CPU: Snapdragon 805 APQ8084AB, GPU: Adreno (TM) 420

Notes:
- No repro on GLES2 and GLES3