Unreal Engine Issues
Unreal Engine Issues
4.14 fails to launch on macOS High Sierra
UE - Platform - Apple - Jan 15, 2018The engine will crash in `FMacPlatformSplash::Show()` when trying to launch on macOS High Sierra. ...
Setting AnimationMode to "UseAnimationAsset" inside Sequencer might not be set properly.
UE - Anim - Sequencer - Sep 30, 2024Adding a new key inside a LevelSequence that changes the AnimationMode of a SkeletalMesh to "Use Animation Asset" can bug out the AnimationMode constantly change between "UseCustomMode" and "UseAnim ...
[MetaSounds] - Trigger on Threshold node Crashes editor on play when using literal value for threshold
UE - Audio - MetaSounds - Mar 15, 2022Editor crashes when Trigger on Threshold node is hooked up in a Metasound graph and played using a threshold value defined on the node. If you use an Input node for the Threshold value, the crash do ...
Crash when trimming animation and then undoing action
UE - Anim - Runtime - May 30, 2023Repro rate: 3/3 times This is a regression as the issue does not occur in 5.1.1 ...
Crash when IK Anim Node is used in post process blueprint.
UE - Anim - Rigging - Retargeting - Nov 5, 2024If an IK Anim node is used in a post-process animation blueprint when that post-process blueprint is active in persona. It will crash attempting to get dynamically created goal components from an ac ...
[Audio Synesthesia] - Setting a Synesthesia NRT's settings to None crashes editor
UE - Audio - Nov 7, 2022Setting an Audio Analysers NRT settings to None crashes the editor. Assertion failed: nullptr != LoudnessSettings [File:D:\SMoyls_UE5_Release-5.1\Engine\Plugins\Runtime\AudioSynesthesia\Source\Audio ...
Error during packaging if nativizing a blueprint that contains a TMap with a UserDefinedEnum as a key
UE - Gameplay - Blueprint - Jun 17, 2019Certain Map container calls (e.g. Find, Add) will fail to compile at packaging time if a Blueprint class containing a Map variable with a user-defined enumeration as the key type is nativized. This ...
Blueprints not marked dirty when variables in referenced actors are renamed
UE - Gameplay - Blueprint Compiler - Feb 20, 2018Blueprints using renamed variable do not indicate that they need to be recompiled. (However errors are shown on play) It is possible to not see an error if you add a variable with the same name as ...
PCGs Duplicate Point node option to apply in Relative Space has metadata warnings and crashes editor.
UE - World Creation - Procedural Tools - Jan 21, 2026When using the PCG Duplicate Point node's "Direction Applied in Relative Space" option, this deletes or messes with the output metadata and, if connected to an output or using it's debug mode, will ...
Skeletal Meshes with imported LODs will use the highest LOD when generating Nanite, rather than LOD0
UE - Graphics Features - Nanite - Jan 14, 2025In the SkeletalMeshBuilder, Nanite is generated when enabled regardless of the LOD being requested. Since the Nanite enablement parameter is set on all LODs in USkeletalMesh::BuildLODModel and LODs ...