Unreal Engine Issues
Unreal Engine Issues
Objects that return false for NeedsLoadForClient not loaded on listen servers
UE - Networking - Jul 19, 2024For instances that are not a dedicated client or dedicated server (e.g. packaged games with TargetType "Game"), GIsClient will be true, but GIsServer will be false. This leads to objects that retur ...
Invalidation panels can retain stale hittest data when caching is disabled/enabled
UE - Editor - UI Systems - Slate - Aug 20, 2024Changes to the hit test grid of an invalidation panel while caching is disabled won't be respected when caching is reenabled. This can cause interactive widgets such as buttons who were set to colla ...
Landscape / Volume Culling option doesn't work on Simplified HLODs
UE - World Creation - Worldbuilding Tools - HLOD - Nov 26, 2024There are options on both landscapes and HLOD layers that when enabled, performs the culling of invisible HLOD vertices (parts of HLOD meshes ending up below the terrain). The option works fine w ...
The ResavePackages commandlet with -ResaveClass and -IncludeChildClasses doesn't resave unloaded assets
UE - World Creation - Worldbuilding Tools - Nov 28, 2024The ResavePackages commandlet can be used to batch resave assets. The ResaveClass and IncludeChildClasses options let one resave all assets of a specific parent class. The problem is that blueprint ...
Global SkyAtmosphere and Clouds Issues (Ambient Light)
UE - Graphics Features - Dec 3, 2024Ambient Light on Volumetric Clouds from Sky Atmosphere always is calculated as if the clouds are at the north pole of the planet. Using a sphere-shaped Sky Atmosphere and Volumetric Clouds causes t ...
Priority order of texture parameters on post process material instances is inverted
UE - Graphics Features - Jan 13, 2025The texture parameters on material instances applied to post process volumes do not respect the priority order of the post process volume, and are in fact inverted relative to the priority of other ...
Improve performance when creating multiple Data Layer Instances
UE - World Creation - Worldbuilding Tools - Dec 10, 2024Every time AWorldDataLayers::CreateDataLayer is called, UDataLayerManager::ResolveActorDescContainersDataLayers() gets called and iterates on all actordescs of the world.When creating multiple data l ...
UEditorEngine::AddPendingLateJoinClient checks original PIE/SIE state, not current state
UE - Networking - Jan 27, 2025When adding late joining clients, the engine checks the originally requested EPlaySessionWorldType, rather than checking whether or not the session is currently simulating or not. This means if the ...
FLevelInstanceActorGuid::GetGuid issue in Multiplayer
UE - World Creation - Worldbuilding Tools - Level Instances - Feb 3, 2025I am doing some runtime manipulation of data layers and I am running into a check failure due to a zero guid in FLevelInstanceActorGuid::GetGuid during multiplayer testing. When I debug FLevelInsta ...
Incorrect mesh deformation when Max World Position Offset Displacement used
UE - Graphics Features - Nanite - Feb 12, 2025When Vertex Animated Texture is used to animate a mesh with World Position Offset, often the Max World Position Offset Displacement Material setting must be increased or the Bounds Scale increased, ...