Unreal Engine Issues
Unreal Engine Issues
Unexpected behavior when Actor Parenting in the World Outliner of a WP map
UE - Engine Scaling - Streaming - World Partition - Nov 23, 2021Licensee reports the following in the UDN: There seems to be some other erratic behavior when using parenting in world outliner (i.e. drag and drop one actor on another one in world outliner).Since ...
Crash when a StateTree-related Parameter is of a type that includes two nested arrays with the same name (due to FPropertyChangedEvent::ArrayIndicesPerObject using array names to map to their changed indices)
UE - Framework - Dec 19, 2025This issue was reported in the context of adding and setting parameters on StateTrees, Tasks and related assets, but its root cause lies in the structure FPropertyChangedEvent and can possibly affec ...
Light baking of a ton of static meshes causes Swarm to crash.
UE - Foundation - Cpp Tools - Mar 25, 2019Light baking of a ton of static meshes causes Swarm to crash due to "Index was our of range". I confirmed that it can be reproduced with the sample project they sent us/ The error log I got is... ...
Crash assigning spline mesh on tiled landscape
UE - LD & Modeling - Terrain - Landscape - Jun 1, 2015Crash assigning mesh to spline on tiled landscape. ...
Import Source disappears in Textures after loading asynchronously loaded level
UE - Editor - Content Pipeline - Import and Export - Dec 15, 2015It looks like when reimporting a texture asset into the engine after loading a level, you will be confronted with the File Selection box and not the reimport successful notification. In fact if you ...
Blueprint improperly marked dirty when it contains a latent node with a byte enum
UE - Framework - Blueprint Editor - Sep 23, 2024In UE 5.4, when deleting actors in our levels, some blueprints will be mark dirty despite not having changed. We traced that down to FAssetRenameManager::CheckPackageForSoftObjectReferences. The af ...
MeshEditor Crashes When Tool is Selected
Tools - Aug 8, 2018MeshEditor Crashes When Tool is Selected. Found in 4.20 CL# 4233996 and 4.21 CL# 4258917 ...
Crash when calling Get Material Slot Names node when using a static mesh component that does not have a specified static mesh
UE - Gameplay - Blueprint - Jul 24, 2017Editor crashes when trying to using get Material Slot Name on a static mesh component that has not has a static mesh specified. ...
Crash creating local variable in ABP function
OLD - Anim - Dec 5, 2019Creating a local variable in an ABP function crashes ...
iOS fails during build step with OSS Facebook plugin enabled due to spaces in filepath
UE - Platform - Mobile - Feb 8, 2019When a user tries to package or launch onto an iOS device they will fail at the build step due to:[3/8] sh Unzipping: /Users/Shared/Epic Games/UE_4.22/Engine/Source/ThirdParty/Facebook/IOS/FacebookS ...