Unreal Engine Issues
Unreal Engine Issues
AnimNotify Issue with LevelSequencer Actor with URO
UE - Anim - Runtime - Anim Blueprints - May 19, 2025Sometimes AnimNotify does not fire when an animation is executed under the following conditions. 1. The CharacterMesh's AnimationMode uses UseAnimationAsset 2. CharacterMesh's URO is enabled (Enable ...
A static mesh far from the origin appears to wobble in PIE
UE - Rendering Architecture - Aug 3, 2023It seems that the numbers are rounded in VertexFactoryCommon shader. The cube consists of vertices that are very far from the origin and are placed on the screen by placing them at coordinates that ...
Updating a meshes UCX collision in an FBX will not reimport with the updated collision if it's been removed
UE - Editor - Content Pipeline - Import and Export - Jan 14, 2015DESCRIPTION: When making a mesh with custom collision with the naming convention of UCX and exporting the FBX for use in UE4 the collision will import and update if any changes are made and reimport ...
GAS: GameplayEffect with RemovalTagRequirements in networked play triggers FScopedActiveGameplayEffectLock ensure
UE - Gameplay - Gameplay Ability System - Nov 3, 2023Reported by multiple users. When in a networked session a GameplayEffect is automatically removed due to:a tag being added that's not allowed, or (TargetTagRequirements.RemovalTagRequirements.MustHa ...
Slow Actor ContainsDataLayer / HasDataLayers
AActor ContainsDataLayer Is Slow: Navigation builds are heavily slowed down by TObjectPtr to TSoftObjectPtr conversions when checking if DataLayerAssets contain Users discovered a huge time los ...
Changing setting in RecastNavMesh breaks "reference" to NavMeshBoundsVolume
UE - AI - Mar 1, 2019When you create a NavMeshBoundsVolume, it automatically creates a RecastNavMesh-Default. You can change the settings of the nav mesh there. However when you change settings of this RecastNavMesh it ...
UMG Widget Hierarchy auto-expands on simple changes causing frustration and a slow work flow
UE - Editor - UI Systems - Oct 10, 20161. Create a hierarchy in UMG that has a couple layers deep of children such as vertical boxes that have multiple children that are vertical boxes, widget switchers .. 2. Collapse all children in th ...
[CrashReport] UE4Editor_Engine!FPhysScene::SyncComponentsToBodies_AssumesLocked() [physscene.cpp:1271]
UE - Simulation - Physics - Dec 1, 2017This is a common crash in 4.18 and 4.18.1. The callstack shares similarities to [Link Removed], although that has been confirmed fixed in 4.18. Included in the same crashGroup are also a few Ensur ...
A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work.
UE - Simulation - Physics - Nov 22, 2024A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work. The licensee noticed that IPhysicsProxyBase* ...
Inaccurate Panning on Tap Delay Submix
UE - Audio - Oct 5, 2021The panning in the Tap Delay Submix Effect does not always match its assigned Pan in Degrees value. Specifically, the left and right side appear to be reversed on Stereo setups. In addition, in 5.1 ...