How to reproduce:
- Open the attached project
- Switch to Android or iOS build platform
- "Build and Run" to a device

Expected:
The image on the UI should be transparent except for the black shape. This works fine on Windows standalone.

Observed:
The image on the UI has a white background. This is observable as soon as you switch platform from standalone to android, and it is also observable when deployed to an android phone (found on a ZTE Axon).

Reproduced in: 2018.3.0b1, 2018.2.7f1, 2018.2.0a1
No repro in: 2018.1.9f2, 2018.1.0b5
Regression since: 2018.2.0a1

Tested and reproduced devices:
VLNQA00091, Google Pixel 2 XL (Pixel 2 XL), 8.1.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
N/A, Sony Xperia Z2 (D6503), 6.0.1, CPU: Snapdragon 801 MSM8974PRO-AB, GPU: Adreno (TM) 330
VLNQA00153, Google Pixel XL (Pixel XL), 8.0.0, CPU: Snapdragon 821 MSM8996 Pro, GPU: Adreno (TM) 530

Fixed in: 2018.2.11f1