Unreal Engine Issues
Unreal Engine Issues
In UE5.5(final), when adding plugin from an older version of Unreal to a BP project, we are informed that the Engine Modules are out of date, and cannot be compiled while the engine is running. Please build through your IDE.
UE - Foundation - Cpp Tools - Nov 19, 2024In UE5.5(final), when adding plugin from an older version of Unreal to a BP project, we are informed that the "Engine Modules are out of date, and cannot be compiled while the engine is running. Ple ...
Iris - Missed subobject destruction can cause incomplete client state
UE - Networking - Iris - Oct 7, 2024From UDN assigned to [Link Removed] ...
When a TSoftObjectPtr pointing to a const type is used as a parameter for a Dyanmic delegate, unreal marks it as deprecaded.
UE - Foundation - Cpp Tools - UnrealHeaderTool - Jan 21, 2025A change has been done to the TSoftObjectPtr class that warns when constructing a pointer-to non-const from a pointer-to-const. This change makes sense and is correct. Example: UTexture2D* Loade ...
Sphere Reflection Captures overridden by Skylight
UE - Graphics Features - Jun 10, 2025When using non-Lumen lighting and Screenspace reflections off, the skylight location overrides the Reflection Capture location during Build Reflections. This results in a Reflection Capture taken fr ...
ULevelSequence trying to duplicate a REINST_ class when creating new custom binding in ConvertOldSpawnables()
UE - Framework - Blueprint Compiler - Jul 23, 2025The assert that we're hitting is:Cannot replace existing object of a different class. New Object: /Engine/Transient.REINST_BPC_NPC_VFX_C_230 /Game/Maps/[REDACTED]/Levels/[REDACTED]/LevelSequence/ ...
Merge Actors (Simplify) is broken with Substrate Shader Models Node
UE - Graphics Features - Substrate - Sep 29, 2025Substrate Materials cannot be baked when Meshes are merged using the "Simplify" method. All textures except for the normal are reduced to a single black parameter. The normal texture produced does n ...
Instanced meshes do not accurately use volume light samples when lit in a statically lit scene
UE - Graphics Features - Aug 14, 2015When using instanced meshes in a Blueprint or in foliage tool the indirect lighting cache will not correctly light these meshes. I've include a sample project with map to demonstrate what the lice ...
Auto Convex collision generation doesn't work in some instances the accuracy setting
UE - Gameplay - Jun 18, 2015The new auto-convex collision generated (V-HACD) will not work properly with some meshes to generate accurate collision. Using a rounded single piece mesh the accuracy setting will not work at all ...
Replacing blueprint assets causes editor to crash
UE - Gameplay - Blueprint - Jun 1, 2015When attempting to replace references of one blueprint with another a number of error message windows pop up ([Link Removed]) and the editor will crash. This is a regression since it was working in ...
Reset Instance Changes to Blueprint Default does not revert changes made to instances
UE - Gameplay - Blueprint - Sep 15, 2015creating an instance of a blueprint and making changes to the instance will not respect "Reset Instance Changes to Blueprint Default" when pressed from Details Pane. ...