Unreal Engine Issues
Unreal Engine Issues
Regression: "Object Position" node in Light Function materials did not compile up to UE 5.0. Starting with 5.1, it compiles but outputs garbage values
UE - Rendering - Architecture - Materials - Aug 26, 2024Up to UE 5.0, when the "Object Position" node is used in the Material Editor as part of a material with Light Function domain, attempting to compile the material results in the following error: "[SM ...
DefaultSceneRoot causes Get Actor Bounds to Return 128
UE - Gameplay - Jun 1, 2016When using the Default Scene Root component in a blueprint with no additional components, the box extent of the Get Actor Bounds node is returning 128,128,128 instead of the expected 0,0,0. If you ...
Niagara GPU Distance Field collision uses only the first view in split-screen, causing collision to drop out for other players when view 0 loses Global DF coverage
UE - Rendering - Architecture - Niagara - Feb 17, 2026In split-screen, Niagara GPU Distance Field collision appears to be evaluated against only the first view passed into the Niagara GPU sim (view index 0), rather than per split-screen view. Because G ...
Vive Trackpad X and Y always return 0
UE - Platform - XR - Feb 3, 2020Platform-specific input for pad axis in 4.24 leads to missing value in VIVE. in 4.23.1 this is not reproduced. ...
[CrashReport] UE4Editor-Engine!UpdateWorldBoneTM(TArray<FAssetWorldBoneTM,TMemStackAllocator<16> > &,TArray<FTransform,FDefaultAllocator> const &,int,USkeletalMeshComponent *,FTransform const &,FVector const &) [PhysAnim.cpp:143]
UE - Simulation - Physics - May 31, 2019Generated from CrashReporter ...
UInstancedStaticMeshComponentRemoveInstances crashes if called with an empty array
This looks like it can be fixed with an early-out when the passed array of indices is empty. Log:[2024.01.03-16.38.36:091][291]LogOutputDevice: Warning: Script Stack (1 frames) : /Game/BP_Crashy.B ...
Crash occurs while clicking through the Landscape Overview Tutorial
Tools - Apr 28, 2017Crash occurs while progressing through the Landscape Overview tutorial, after the step "After pressing the Create Button, your level should now have a Landscape Actor inside of it" This is a regres ...
Blueprints with Input action events are dirtied and upon being opened
UE - Gameplay - Blueprint Editor - Aug 10, 2017Opening a blueprint that has an input event in it cause the blueprint to become dirtied and require compiling. Regression?: Yes This did not occur in 4.16.3-3561208+++UE4+Release-4.16 Versions tes ...
Packaging with Nativize Blueprint Assets Causes Uninitialized Defaults
UE - Gameplay - Blueprint Runtime - Jul 28, 2016If you use "Set Array Elem" on a vector array but leave "Item" at the default value of (0,0,0) then you'll end up using a temporary uninitialised vector instead of (0,0,0) when it's nativized. Work ...
[CrashReport] UE4Editor_CoreUObject!FLinkerPlaceholderObjectImpl::FindRawPlaceholderContainer() [linkerplaceholderbase.cpp:161]
UE - Gameplay - Blueprint - Sep 27, 2017This is currently among the top 10 crashes coming out of the 4.17.2 hotfix, affecting a few unique users, and this specific callstack does not appear to have occurred in 4.17.1. This may be a regres ...