Unreal Engine Issues
Unreal Engine Issues
Finish or Custom Event Tracks in a Timeline don't execute when 'Set New Time' is being used
UE - Gameplay - Aug 8, 2018When using Finish or Custom Event Tracks in a Timeline, they won't execute when 'Set New Time' is being used with another Timeline or Float value. This issue was reported and tested in 4.19.2 (CL ...
DirectX Tesselation Crash
UE - Graphics Features - Dec 12, 2017Per UDN Licensee: I have 2 crash repro when enabling DirectX12, both linked to tesselation and still present in 4.18 stock engine and easy to reproduce. Crash 1 -Start editor with DirectX12 -Cre ...
Landscape Spline Width/Side Falloff does not respect Unreal Units.
UE - LD & Modeling - Terrain - Landscape - Nov 15, 2019The user reports that the Landscape Spline Width and Side Falloff isn't respecting Unreal Units in the Editor. The usage for comparison is a Cube that is scaled up 7x to Splines that have a Width of ...
Android Random Startup Crashing
UE - Platform - Mobile - Sep 9, 2020Licensees are reporting random crashes at startup, with randomly different messages, but it seems that all have a "low-address null pointer dereference". The licensee believes that the phone someti ...
SingleLayerWater Material crashes when sampling SceneTexture:CustomStencil.
UE - Rendering Architecture - Shaders - Sep 19, 2024There is a texture mismatch between the expected texture samplers and actual texture samplers for SingleLayerWater materials that use the Material Function StencilMaskCompare. Also tested on UE5.5, ...
The ChaosCacheManager changes the bSimulatePhysics flag from the ObservedComponents and, if deleted, the change will persist, what can lead to confusion as observed physical entities will inadvertently stop simulating physics
UE - Simulation - Physics - Nov 26, 2024The ChaosCacheManager (CCM) changes the bSimulatePhysics flag from the ObservedComponents and, if deleted, the change will persist, what can lead to confusion as observed physical entities will inad ...
Non-terminating while loop when creating a new BP Actor and quickly switching between components.
UE - Gameplay - Blueprint Editor - May 14, 2024It is possible for the while loop in UnrealEditor-SubobjectDataInterface.dll!USubobjectDataSubsystem::GetActorRootHandle(const FSubobjectDataHandle & StartingHandle) Line 815 to not terminate when ...
Clean DocumentDB setup fails indexing
UE - Foundation - Horde - Server - Feb 21, 2025Source [Link Removed] The user has encountered the error log: MongoDB.Driver.MongoCommandException: Command createIndexes failed: Implicit collection creation not supported when creating indexes I ...
Instanced Static Meshes Incorrect Normals when Scaled Non-Uniformly
UE - World Creation - Worldbuilding Tools - Foliage - Apr 2, 2015When comparing the World Normals of an Instanced Static Mesh being scaled non-uniformly to that of a regular Static Mesh, their normals do not match one another. I have attempted to look over the d ...
Replicated variables defined in Actor Component blueprints do not actually replicate
UE - Networking - May 1, 2015Replicated properties defined in an actor component blueprint are not being replicated because UActorComponent::GetLifetimeReplicatedProps isn't adding the blueprint properties to the OutLifetimePro ...