Steps to reproduce:
1) Download attached project 'Bug.zip' and open in Unity
2) Open scene 'test'
3) In Hierarchy, increase Range of Point light to ~9
4) Build and run 'test' scene on a device
Compare result with Editor( Sprite will not reflect light from Point light on a device)

Check attached screenshots(Expected and actual result)

Regression started in: 5.6.0b2 (5d236ef0678a)

Reproduced with:
5.6.0b3, 5.6.0b5
Not reproduced with:
5.6.0b2

DUT:
Reproduced with:
Htc HTC One M9, OS:6.0, CPU:arm64-v8a, GPU:Adreno (TM) 430, Build:htc/himauhl_htc_europe/htc_himauhl:6.0/MRA58K/671758.12:user/release-keys

Samsung galaxy S7 SM G930V, OS:6.0.1, CPU:arm64-v8a, GPU:Adreno (TM) 530, Build:Verizon/heroqltevzw/heroqltevzw:6.0.1/MMB29M/G930VVRU1APB1:user/release-keys

Not reproduced with:
Samsung SM G925F (Galaxy S6 Edge), OS:6.0.1, CPU:arm64-v8a, GPU:Mali-T760, Build:samsung/zeroltexx/zerolte:6.0.1/MMB29K/G925FXXS4DPJ2:user/release-keys