iOS apps crash on devices with iOS version 11.2.2 when Metal 2.0 is enabled

UE - Platform - Mobile - Jan 22, 2018

Launching an iOS App that is set to Metal 2.0 on a device with iOS version 11.2.2 causes the app to crash and return to the home screen. This was tested on an iPad Pro as I do not have access to any ...

Blueprint nativization does not properly convert references to other Blueprint class types marked NotForServer/NotForClient during export tagging.

UE - Gameplay - Blueprint Compiler - Jan 24, 2018

Example: Widget Blueprint classes do not get nativized for WindowsServer configs when 'Load Widgets on Dedicated Server' is false (i.e. NeedsLoadForServer() returns false). As a result, if another c ...

FOnlineAsyncTaskManager may not process Parallel Tasks if there's no Active Task.

UE - Online - Jan 24, 2018

FOnlineAsyncTaskManager::Run waits for the WorkEvent to trigger before it will tick. However, this event only gets triggered if there are new Available Tasks. Therefore, even though there may be pe ...

[Metal-Epic:iOS] Directional Light graphics corruption when using the Metal Desktop Forward Renderer on iOS

UE - Graphics Features - Jan 25, 2018

When enabling the Metal Desktop Forward Renderer on iOS, Directional Light's with Light Shaft Bloom enabled will cause full screen graphics corruption when looking at the light source. ...

UBX Collision Does Not Resize With Mesh When Scaled

OLD - Anim - Feb 19, 2018

-An asset with UBX collision created in Maya(2016), does not scale with it's collision when brought into Unreal -Scale one axis at a time and not the asset as a whole -Collision not generated on im ...

Consolidate tool fails to replace unloaded references to Material Instances

Tools - Feb 20, 2018

This issue is not a regression, it has been broken since the start of UE4. This bug may be related to [Link Removed] . Per licensee: We are trying to replace certain materials with material instan ...

Set Array Elem - saving wrong value

UE - Gameplay - Blueprint - Feb 23, 2018

When using the Set Array Elem and an empty Boolean array the results from a print string differ when testing an actors hidden value. It seems that this logic will always return true as it references ...

Dithered LOD Shadowing transition issue when using Stencil with HISM

UE - Graphics Features - Feb 27, 2018

Hierarchical instance static meshes appear to have a shadowing issues when transitioning between LODs when dithering using Stencils. Note: This issue may be related to [Link Removed] or [Link Remo ...

Migrating a soft reference in a struct from 4.17 to a newer version of the engine results in the variable being changed to an integer

UE - Gameplay - Blueprint Editor - Mar 5, 2018

When migrating a struct with a soft reference from 4.17 (or older) to a newer version of the engine, the soft reference will have it's default value converted to an integer after a new member variab ...

Nativized BP Struct dependency can lead to a fatal loader stall

UE - Gameplay - Blueprint Runtime - Mar 7, 2018

Report of a chain of dependencies that can lead to a fatal loader stall in a nativized build:Thing -> BPStruct2BPStruct1 -> BPStruct2 The necessary order of operations is:BPStruct1 loadsBPStruct2 l ...