Assertion failed: bSupportsDeferredStore

**Hi,

Anyone encounter this before…

LogMetal: Display: Loaded a text shader (will be slower to load)**

2018-01-10 09:16:45.114457+1100 SimpleMobileProject[2015:997966] [2018.01.09-22.16.45:114] 2]LogMetal: Display: Loaded a text shader (will be slower to load)

LogMetal: Display: Loaded a text shader (will be slower to load)

2018-01-10 09:16:45.244356+1100 SimpleMobileProject[2015:997966] [2018.01.09-22.16.45:244] 2]LogMetal: Display: Loaded a text shader (will be slower to load)

LogMetal: Display: Loaded a text shader (will be slower to load)

2018-01-10 09:16:45.282333+1100 SimpleMobileProject[2015:997966] [2018.01.09-22.16.45:282] 2]LogMetal: Display: Loaded a text shader (will be slower to load)

LogMetal: Display: Loaded a text shader (will be slower to load)

2018-01-10 09:16:45.443381+1100 SimpleMobileProject[2015:997966] [2018.01.09-22.16.45:443] 2]LogMetal: Display: Loaded a text shader (will be slower to load)

LogMetal: Display: Loaded a text shader (will be slower to load)

2018-01-10 09:16:45.467365+1100 SimpleMobileProject[2015:997966] [2018.01.09-22.16.45:467] 2]LogMetal: Display: Loaded a text shader (will be slower to load)

2018-01-10 09:16:45.548259+1100 SimpleMobileProject[2015:998216] Assertion failed: bSupportsDeferredStore || !Info.DepthStencilRenderTarget.GetDepthStencilAccess().IsDepthWrite() || Info.DepthStencilRenderTarget.DepthStoreAction == ERenderTargetStoreAction::EStore [File:/Users/peter/dev/UE4/UE4-17_src(with_sf)/Engine/Source/Runtime/Apple/MetalRHI/Private/MetalStateCache.cpp] [Line: 1497]

Regards