Unreal Engine Issues
Unreal Engine Issues
Component default data can be lost for a non-nativized Blueprint class that inherits the component from a nativized parent Blueprint class.
UE - Gameplay - Blueprint - Sep 5, 2018This is a regression that was introduced by the fix for [Link Removed]. The fix makes an invalid assumption that instances of components whose archetypes are inherited by a non-nativized child Blue ...
Crash upon opening packaged game when Event Driven Loader is disabled
UE - Foundation - Core - Apr 26, 2019Packaged games are unable to open when Event Driven Loader is disabled. The error message given is: Assertion failed: !Linker->GetSerializeContext() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\C ...
Project launch options flicker between available and unauthorized/locked
Tools - Aug 20, 2018Project launch options flicker between available and unauthorized/locked Unsure what causes this, but I have hit the issue twice. Another person has also seen this on their machine. I was able to ...
Sub Instance Root Motion issues
OLD - Anim - Dec 10, 2019Using multiple Sub instances with root motion does not behave as expected. With both the parent and sub instances set to 'Root Motion from Everything': In 4.22, too much root motion occurs. In ...
Actor Component Replication Not Working on Dynamically Spawned Components in Blueprint
UE - Networking - Aug 7, 2018Actor components that are spawned dynamically through Blueprint are not being properly replicated to the client. Found in 4.20 CL# 4233996 and reproduced in 4.21 Main CL# 4258917 Unable to test i ...
Changing particle system template via Blueprints crashes Editor and packaged game
UE - Niagara - Apr 4, 2019Setting a ParticleSystem component in a Blueprint to none/null with a "Set Template" node causes the editor and the packaged project to crash. I have noticed this when migrating my game to 4.22, whi ...
Specular Isn't Affected for Materials Set to the Eye Shader If r.IrisNormal is Enabled
UE - Graphics Features - Aug 27, 2019Specular Doesn't Affect a Material with the Eye Shader If r.IrisNormal is enabled. Found in 4.22 CL# 7053642, 4.23 CL# 8115738, 4.24 CL# 8302014 ...
Alpha blending is done twice when using RenderOpacity of RetainerBox's parent slot
UE - Editor - UI Systems - UMG - Feb 10, 2023Licensee reported that alpha blending is done twice in the code below, and the fix below seems to fix it. .\Engine\Source\Runtime\UMG\Private\Slate\SRetainerWidget.cpp From:const FLinearColor Compu ...
Crash in DX12 UpdateTexture2D
UE - Graphics Features - Jan 24, 2017RHIUpdateTexture2D uses the wrong size for the per-row memcpy, which means we can't support passing in an offset within a larger image in the SrcData pointer (doing so will result in an access viola ...
Crash when Rendering a Sequence at resolutions higher than 4K with DX12 and Ray Tracing Enabled
UE - Rendering Architecture - RHI - Jul 2, 2019The Editor will crash when rendering a sequence at 7680x7680 with dx12 and ray tracing enabled. Found in 4.22 CL# 7053642, 4.23 CL# 7208101, 4.24 CL# 7210422 ...