Unreal Engine Issues
Unreal Engine Issues
DataLayer: Duplication a GroupActor is broken
UE - World Creation - Worldbuilding Tools - Data Layers - Aug 5, 2025The result of the duplication operation is that the Actors in the new group are part of the DataLayer but the new GroupActor is not. ...
NavMesh generation should not care for Actors that are hidden in the Editor.
UE - AI - Navigation - Aug 5, 2025The problem is that the Cube is still loaded but "HiddenEd". It's AActor::bHiddenEdLayer property is set to true by the WorldPartition System. The Actor is dirty which makes the WP system pin it (wo ...
Iris - RPCs split into partial blobs aren't received on non-replicated components
UE - Networking - Iris - Aug 5, 2025This issue does not occur if the RPC is not split into partial blobs. The RPC is received on the non-replicated component if Iris is disabled. ...
FInstancedStruct does not serialise to JSON when used in a DataTable
UE - Editor - Workflow Systems - Aug 4, 2025The JSON export functionality for DataTable relies on a FieldIterator to gather properties. This iterator is unable to gather the properties from the InstancedStruct. CSV export functionality works ...
SSR doesn't reflect Skydome Mesh/Material correctly in Vulkan mobile preview
UE - Platform - Mobile - Aug 4, 20255.6[Image Removed] 5.5[Image Removed][Link Removed] ...
LiveCoding fails when DynamicDebugging is enabled
UE - Foundation - Cpp Tools - Live Coding - Aug 4, 2025If DynamicDebugging is enabled, the output extension in the LiveCoding manifest is ".alt.dll", but the actual built DLL does not include ".alt" in its name. This mismatch causes an error. ...
SkinWeightsAsVertexMask in DeformerGraph does not respect SkinWeightProfile
UE - Anim - Rigging - Deformer - Aug 1, 2025The WeightBuffer passed to the shader does not reflect the SkinWeightProfile. The work around is : void FOptimusSkinWeightsAsVertexMaskDataProviderProxy::GatherDispatchData(FDispatchData const& In ...
Sequence thumbnails save with visual issues
UE - Anim - Sequencer - Aug 1, 2025[Link Removed] When camera tracks are activated, saving the sequencer results in captured anomalies: 1. Incorrect aspect ratio 2. Additional post-processing effects such as lens flare appear 3. ...
start/end state notify events can be sent every frame on dedicated server builds
UE - Anim - Gameplay - Aug 1, 2025The problem is that UCharacterMovementComponent::MoveAutonomous can tick the anim instance and dispatch notifies outside of the regular skeletal mesh component tick. But when MoveAutonomous calls T ...
Crash when displaying lumencards on map with many objects
UE - Graphics Features - Lumen - Aug 1, 2025There is a thread conflict between FRDGBuilder execution in Background Worker and LumenVisualizer's LumenCard add/delete process. When lumen cards are displayed in a scene with many objects, a crash ...