To reproduce:
1) Open attached project and _scenes/test scene in it
2) Run it in editor - see red sphere in front and blurred blue sphere in back
3) Build and run it on a device with Adreno GPU
4) See that red sphere has disappeared or only small artifacted fragment of it is visible (depends on
If you remove the Depth of Field effect from Main Camera, the issue is no longer reproducible

DUT (Reproduced):
Samsung Galaxy S7 (Adreno 530)
Google Nexus 6 (Adreno 420)
Google Nexus 5 (Adreno 330)

DUT (Not reproduced):
Nvidia Shield (Tegra K1-32)