Unreal Engine Issues

Base materials in exported Datasmith files imported into Unreal Engine are missing material function.

Datasmith imports in UE do not render materials due to missing material function. Works in UE 5.6 main but not UE 5.5 or 5.4 ...

Functions containing Unicode characters break nativization on Clang-hosted target platforms.

The UHT boilerplate code that's generated from a converted Blueprint class header file generated from a Blueprint class containing one or more function names with non-ASCII characters will fail to c ...

OnRep functions do not fire on the Server when elements are added to an array variable marked as RepNotify

OnRep functions do not fire on the Server when elements are added to an array variable marked as RepNotify. They do not fire at all when setting an array element with the Set Array Elem node. Proba ...

When creating an extra return node inside of a function the return values should be duplicated across both nodes

When a user creates a second return node (Right click> "Return node") inside of a function the second return node will duplicate any return values that are added while it is in existence. ...

Texture Sample Parameters cause error when used in Make Material Attributes Material Function

When creating a Material Function for the use in a Layered material setup using the Make Material Attributes Node, you cannot use a Texture Sampler Parameter. Also Reproduced in Main Promotable-CL- ...

SetAllBodiesBelowPhysicsDisabled functionality appears to leave bodies behind that raycasts can still interact with.

From UDN We use SetAllBodiesBelowPhysicsDisabled() to disable some bodies of our Vehicle. However by drawing the disabled bodies' particles position, we found those particles stay where they disab ...

Duplicating an overridden function graph causes input/output pins to double

This is caused by the same thing that causes this: https://jira.it.epicgames.net/browse/UE-58390 FBlueprintEditorUtils::PromoteGraphFromInterfaceOverride is the cause of this behavior  ...

Lumen Software Raytracing has big lighting difference comparing to Hardware raytracing

Crash Occurs After Server Travel When a Multicast Function with Params Was Called in the Level Blueprint

When a level's blueprint contains a multicast function with a parameter, Server Traveling to that level, triggering the multicast, Server Traveling to another level and then back to the level that h ...

Attempting to add or alter custom functions in character blueprint crashes editor upon compile

Editor crashes when adding or adjusting functions within character blueprint. Frequency: 5/5 Crashreporter: N/A Note: Does not reproduce on a new character blueprint, this seems limited to a cha ...