TBaseBlendedCurve::ConvertToAdditive adds a curve track to an additive when the curve only exists in the base pose

UE - Anim - Runtime - May 29, 2023

When we create curves on additive animations, we are creating a curve based on whether the curve exists in either the base or additive pose.  This wouldn't be the expected behaviour for a user when ...

World position offset (WPO) and nanite enabled causes shadow of complex static mesh actor to be deformed at a specific distance

UE - Graphics Features - Nanite - Dec 19, 2024

Context / Problem: Complex static mesh actors with nanite enabled and Evaluate World Position Offset (WPO) enabled works together except for a specific distance where the shadow is deformed and sort ...

BlueprintNativeEvent functions break on hot reload

UE - Gameplay - Blueprint - Mar 7, 2015

A blueprint that uses a node for a BlueprintNativeEvent function breaks on hot reload. Blueprint cannot be saved or compiled. Compile error states: Error This blueprint (self) is not a HOTRELOADED ...

Crash when setting Project to only use Windows and DX11 with texture compression as BC7

UE - Graphics Features - Jan 11, 2016

When user sets their texture compression to BC7 while the project settings are set for Platform to only be Windows and use only DX11 this will cause any textures with this set to cause a crash when ...

Setting Pressed Sound for Widget Style Doesn't Set the Value

UE - Editor - UI Systems - Nov 6, 2015

Attempting to set the Pressed Sound for Widget Style dynamically never actually sets the sound. When you click the button, you get no pressed sound. However, when setting the Pressed Sound through t ...

Ensure when using Ctrl Z to undo painted landscape - UE4Editor_Engine!FPrimitiveSceneProxy::VerifyUsedMaterial() primitivesceneproxy.cpp:599

UE - LD & Modeling - Terrain - Landscape - Feb 9, 2017

Note This is a one off crash, that I was not able to reproduce it again. Quickly changing the materials on landscape by painting and undo-ing seems to create this rendering crash ...

Engine Crashes When Previewing ES3_1 With Material Using World Position Offset (Need Custom Stencil)

UE - Platform - Mobile - Feb 15, 2017

This crash will only occur when this criteria is met.You have enabled custom depth with stencils in the project settingsA mesh in the scene is rendering to custom depth with a stencil value of 1The ...

Cannot pass a Dictionary through a Replicated Function

UE - Networking - Aug 23, 2018

When passing dictionary (map) variables through replicated (to server) functions, the value will not print out on the client. In 4.19.2 (CL-4033788) this caused a crash but in 4.20.2 (CL-4302132) an ...

tvOS crash on startup with Shared Material Shader Code enabled

UE - Platform - Mobile - Jul 9, 2019

Enabling Shared Material Shader Code will cause a crash on tvOS From user: "We originally enabled Share Material Shader Code long before trying a tvOS build, making this crash tricky to debug. W ...

Child actor passes a string to it's parent's overloaded constructor the incorrect string is received

UE - Gameplay - Sep 24, 2019

When a child actor passes a string to it's parent's overloaded constructor using an overridden function that returns a string it won't receive the correct string. I have verified that the correct fu ...