Steps to reproduce:
1. Open attached project
2. Switch to android platform
3. Build and Run project on a device

Expected result: Full screen splash according to resolution
Actual result: Small splash screen will appear

If we remove each "drawable" folders in "Plugins/Android/res", the splash screen will be full screen
But we would like to show the splash screen for each resolution

Reproduced on: 5.6.1p4, 5.6.2f1, 5.6.2p1, 2017.1.0f1, 2017.2.0b1
Does not reproduce on: 5.6.1f1, 5.6.1p3
Regression introduced in: 5.6.1p4.

Devices under testing:
1440p:
Samsung Galaxy S7, OS:7.0, CPU:arm64-v8a, GPU:Adreno (TM) 530, Build:Verizon/heroqltevzw/heroqltevzw:7.0/NRD90M/G930VVRU4BQA2:user/release-keys
Xiaomi MI NOTE Pro, OS:7.0, CPU:arm64-v8a, GPU:Adreno (TM) 430, Build:Xiaomi/leo/leo:7.0/NRD90M/7.4.27:user/release-keys

1080p:
LGE Nexus 5X, OS:7.1.2, CPU:arm64-v8a, GPU:Adreno (TM) 418, Build:google/bullhead/bullhead:7.1.1/N4F26I/3532671:user/release-keys
Samsung Galaxy S4, OS:4.2.2, CPU:armeabi-v7a, GPU:Adreno (TM) 320, Build:samsung/jfltexx/jflte:4.2.2/JDQ39/I9505XXUAMDM:user/release-keys

720p:
LGE Nexus 4, OS:5.1.1, CPU:armeabi-v7a, GPU:Adreno (TM) 320, Build:google/occam/mako:5.1.1/LMY48T/2237560:user/release-keys
Samsung Galaxy S5 Mini, OS:6.0.1, CPU:armeabi-v7a, GPU:Mali-400 MP, Build:samsung/kminiltexx/kminilte:5.1.1/LMY47X/G800FXXU1BPC4:user/release-keys

Fixed in: 2017.3.0a2
Backported to: 5.6.3p1, 2017.1.0p2, 2017.2.0b4