Natively declared Gameplay Tags aren't counted by Reference Viewer when set default by ctor

UE - Gameplay - Jul 11, 2024

Similar to Issue 199247 ([Link Removed]), Natively declared Gameplay Tags aren't counted by Reference Viewer when used in a variable set in a C++ ctor. ...

Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE

UE - Graphics Features - Jul 11, 2024

When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...

Sandbox Visitors can fail on empty directories on non-Windows platforms

UE - Foundation - Jul 11, 2024

When a Sandbox Visitor checks a directory and it doesn't exist, it returns true on Windows and false on other platforms. The code that uses the result of this check, IterateDirectory, doesn't conti ...

Integer overflow in NaniteBuilder can lead to an editor crash on certain meshes

UE - Graphics Features - Nanite - Jul 10, 2024

NaniteBuilder uses an int8 type for ExternalEdges and counts adjacency with a int32. The bug stems for the cast to int8 when adding the adjacency count into the ExternalEdges array. The precision l ...

PCG Graph callback fails after compiling blueprint

UE - World Creation - Procedural Tools - Jul 9, 2024

PCG graph callbacks in BP do not appear to get called correctly after the blueprint is compiled. ...

'Max World Position Offset Displacement' causes culling issue on HISMC/foliage in 5.4

UE - Rendering Architecture - Materials - Jul 9, 2024

Foliage/hierarchical instanced static mesh components have issues with culling when their material's "Max World Position Offset Displacement" value is a higher amount, e.g. 100.0. ...

World position offset behaves differently when setting its value directly on the result node

UE - Rendering Architecture - Materials - Jul 8, 2024

The world position offset input of the result node does not behave consistently. There is an obvious visual difference between the setting it by connecting a float3 color constant, versus setting th ...

Incorrect behavior after attaching an actor to a non-root component of another actor in the Editor

UE - Editor - Workflow Systems - Jul 3, 2024

UE allows actors to be attached to other actors. More precisely, it allows the root component of an actor (child) to be attached to any component of another actor (parent). From now on, "parent" and ...

Crash when enabling global logging in 5.4.2

UE - Foundation - Jul 3, 2024

Packaged projects on 5.4.2 (DebugGame) crash immediately on startup when it is opened through the command line using the global logging very-verbose argument. ...