Unreal Engine Issues
Unreal Engine Issues
Foliage frustum cull based on incorrect bounds size
UE - World Creation - Worldbuilding Tools - Foliage - Aug 22, 2016When changing the static meshes of a Foliage instance by swapping the mesh or changing the scale (build settings) of the mesh, the bounds for the mesh do not appear to update to use the new bounds. ...
Unable to launch project from Visual Studio using installed engine build
UE - Foundation - Build - Farm - Feb 23, 2017When a code project's engine association is switched to a local binary version of a source engine, the project will fail to open from within Visual Studio. Error message says that UE4Editor-Project ...
Phaser module is malfunctioning
UE - Audio - Apr 9, 2019The phaser module that is part of the new Audio Engine causes audio from a Sound Cue to mute after playing for one second. The user states that the issue comes from the Phaser.cpp file producing a N ...
Python crash the engine at exit.
UE - Editor - Workflow Systems - Oct 25, 2022A UDN reported various crashes at exit in the embedded Python library. I was able to repro the issue in Release-5.1 and trace it back at the point where python runs its garbage collection in Py_Fina ...
Crash in AWorldDataLayers::InitializeDataLayerRuntimeStates() when quickly unloading then loading a sub-world partition
UE - World Creation - Worldbuilding Tools - Data Layers - Mar 6, 2025From licensee: Since we integrated 5.5, we are experiencing a crash in AWorldDataLayers::InitializeDataLayerRuntimeStates() on this line check(ActiveDataLayerNames.IsEmpty() && LoadedDataLayerN ...
Compile failure launching C++ project onto tvOS/iOS in Development
UE - Platform - Mobile - Apr 13, 2017This is the same issue as UE-41313 but is showing up in the release branch.[2017.04.12-21.37.50:215][354]LogPlayLevel: UnrealBuildTool: /Users/Shared/UnrealEngine/4.16/Engine/Source/Runtime/Core/Pub ...
Physics Substepping doesn't have the same effect from 4.15 to 4.16
OLD - Anim - Aug 8, 2017Physics Substepping doesn't have the same effect from 4.15 to 4.16. In 4.16+ the ponytail in the provided project will have a jitter effect even with substepping enabled. This is a regression: Work ...
[CrashReport] UE4Editor_UMG!TBaseDelegate<FMargin>::operator=() [delegatesignatureimpl.inl:381]
UE - Editor - UI Systems - Aug 29, 2017This is a longstanding and common UMG crash that has affected more than 200 users since at least the 4.15 release. User DescriptionsI was working in the UI and undid several last changes in quick s ...
[CrashReport] UE4Editor_UnrealEd!FBlueprintCompileReinstancer::ReplaceInstancesOfClass_Inner() [kismetreinstanceutilities.cpp:1880]
UE - Gameplay - Blueprint Compiler - Oct 5, 2017This is a somewhat common crash that has occurred throughout the 4.17 release. Users have not provided any description of their actions when the crash occurred. The callstack is similar to some ol ...
Always Relevant actor may replicate incorrect movement mode when the walkable floor becomes irrelevant
UE - Gameplay - Player Movement - Feb 26, 2024When the character class is set to always relevant, if a client travels very far away from another character, such that the character is relevant but the component they're standing on is not (but al ...