Hot reload can prevent code components from being accessible in blueprints

UE - Foundation - Cpp Tools - Hot Reload - Sep 29, 2017

When a class is edited / hot reload preformed, code based components are sometimes removed from the MyBlueprint > Variables section and cannot be dragged from the Components tab into the graph with ...

SSR on Translucency is not affected by Post Process Volume

UE - Graphics Features - May 24, 2018

Screen space reflections on translucent materials are not affected by post process settings. Any changes made to SSR settings in the volume will do nothing to a material that is set to the transluce ...

DMX component in world partitioned level fails cook

UE - Virtual Production - IO - DMX - Feb 10, 2025

Since UE5.5, RegisterComponent has been called during cook process, So unnecessarily references from DMXLibrary to DMXComponent has been added.  There is a workaround to avoid adding references : ...

Keep Simulation Changes will persist only a subset of changed properties

UE - Editor - Jan 10, 2025

As per the steps to reproduce, Keep Simulation Changes will often only copy back the most recent property changed on a simulating Actor back to the version of the Actor in the Editor level. It is no ...

Exponential Editor Slate Performance Cost When Editing An Asset With Nested Instanced Structs

UE - Editor - Workflow Systems - Feb 20, 2024

UDN Issue: [Link Removed] ...

Ensure in AR Template on Android

UE - Platform - XR - Jan 5, 2023

Regression: Tested in UE5/Release-5.0, this issue did not occur so it is a regression. ...

Cannot build project for Shipping when bUseLoggingInShipping is set to true for a project that uses replicated properties

UE - Foundation - Core - Mar 22, 2018

Enabling bUseLoggingInShipping for a project prevents the project from being built for Shipping if the project includes replicated properties. This is only an issue with binary builds of the Engine. ...

[CrashReport] UE4Editor_CoreUObject!UObjectPropertyBase::Identical() [propertybaseobject.cpp:60]

UE - Foundation - Cpp Tools - Hot Reload - Nov 17, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Access violation - code c0000005 (first/second chance not available) Source C ...

Sprite collision is inaccurate

UE - Gameplay - Paper2D - Oct 31, 2014

Sprite collisions do not accurately reflect the collision for the sprite. While the collisions are always the same between two of these, the collisions do not correspond to the shape of the collisio ...

Code classes that include a CableComponent cannot be built in Visual Studio without making a modification to the CableComponent.h file in source code.

UE - Gameplay - May 14, 2015

Adding a cable component to a custom code class will result in a build failure in Visual Studio unless the Cable Component's source code is modified to include CABLECOMPONENT_API. ANSWERHUB:https:/ ...