Unreal Engine Issues
Unreal Engine Issues
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 ...
SourceControl: Error: Operation 'UpdateChangelistsStatus' not supported by source control provider 'Subversion'
UE - Editor - Apr 15, 2021When trying to check in a new asset or changed asset via the source control menu or Tools menu, an error comes up in output log. SourceControl: Error: Operation 'UpdateChangelistsStatus' not suppor ...
The ChaosCacheManager changes the bSimulatePhysics flag from the ObservedComponents and, if deleted, the change will persist, what can lead to confusion as observed physical entities will inadvertently stop simulating physics
UE - Runtime - Simulation - Nov 26, 2024The ChaosCacheManager (CCM) changes the bSimulatePhysics flag from the ObservedComponents and, if deleted, the change will persist, what can lead to confusion as observed physical entities will inad ...
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 ...
Physics Constraint doesn't hold if one Component is used for constraint
UE - Simulation - Physics - Jul 22, 2015Physics Constraint doesn't hold if one Component is used for constraint User Description: Hello, I recently updated the project from 4.7.6 to 4.8.2 and the physics constraint don't seem to work an ...
UnrealVS: Compile Single File no longer working after upgrading to 5.3
UE - Core - Cpp Tools - Oct 2, 2023After installing the UnrealVS version that arrived with 5.3. I can no longer use CompileSingleFile. It does however work on the Lyra project. One difference I notived, however, is that Lyra seems to ...
FAnimationRuntime::BlendPosesPerBoneFilter() causes an assertive crash when Skeletal Mesh LOD is changed
UE - Runtime - Animation - Nov 1, 2023The crash occurs from "check(BoneBlendWeights.Num() == NumBones);" This crash occurs when the following conditions are met;The skeletal mesh LOD is changed.The number of bones is difference between ...
Assertion failed: GEditor->GetSelectedActorCount() == 1 in FLevelEditorActionCallbacks::Paste_CanExecute
Tools - May 3, 2017This is a high frequency crash occurring for our users. It appears to be the same crash reported in [Link Removed], however that was fixed in 4.15.0, and the specific repro steps are verified to 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 ...
Crash when enabling HZB occlusion culling
UE - Graphics Features - Dec 16, 2020Enabling HZB Occlusion culling results in a reproducible crash. Looks like a community member noticed this back in preview 2: https://forums.unrealengine.com/unreal-engine/announcements-and-release ...