Unreal Engine Issues
Unreal Engine Issues
Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly
UE - Gameplay - Blueprint - May 6, 2019At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...
Missing SmallOSAlloc/Free memory tracking with LLM on iOS
UE - Platform - Mobile - Dec 11, 2020Licensee reports missing memory tracking for LLM on iOS: In Engine/Source/Runtime/Core/Private/HAL/MallocBinned.cpp in SmallOSAlloc, there is a compiler define for IOS and within it there is an LLM ...
Runtime Virtual Texture primitives set to never render to main pass still cause occlusion queries
UE - Graphics Features - Mar 23, 2021RVT only primitives are being pushed through the occlusion culling. It would be more efficient to not do that. ...
AsyncSaveGameToSlotForLocalPlayer does not properly handle multiple requests
UE - Gameplay - Nov 14, 2025ULocalPlayerSaveGame::AsyncSaveGameToSlotForLocalPlayer was designed to properly support multiple in flight requests at the same time, but the current code does not work correctly and this can cause ...
Editor crashes when assigning Landscape layer info while Forward Shading is enabled
UE - LD & Modeling - Terrain - Landscape - Nov 7, 2017Crash occurs when Forward Shading is enabled in Forward Rendering Options User noted that if "Support Stationary Skylight" in Project Settings > Rendering > Shader Permutation Reduction is disabled ...
Crash Occurs when changing the 'Max Metal Shader Standard To Target' option within iOS Project Settings
UE - Platform - Mobile - Jan 26, 2017A crash occurs when setting the Max Metal Standard Shader version within the Project Settings for iOS. I tested on both Mac and PC and the crash occurs on both machines. Regression? No, this is not ...
X axis rotation only follows relative rotation
UE - Gameplay - Apr 10, 2017A user is reporting that the X axis rotation appears to only rotate based on the object's relative rotation, and not rotate based on the world rotation, even when using Set world rotation. For test ...
Launch crashes on Android if device has Wifi disconnected
UE - Platform - Mobile - Mar 10, 2016Launch On crashes on a Android devices if networking is disabled. This used to work and should not crash. ...
RENDERING: Unchecking Actor Hidden in Game for Actors is not letting them be visible in game
UE - Graphics Features - Jun 19, 2014CHANGELIST: 2107728 BRANCH: UE4 DESCRIPTION: Unchecking the Actor Hidden in Game checkbox is not allowing a Note or an Ambient Sound be visible when played in the editor QA REGRESSION? NO ...
Cannot package an Engine plugin if another Engine plugin depends on the plugin being packaged
UE - Foundation - Cpp Tools - Plugin System - Nov 12, 2018Packaging an Engine plugin fails if another Engine plugin lists that plugin as a private dependency. In the two attached plugins, PluginA lists PluginB as a required plugin in its .uplugin file, and ...