Unreal Engine Issues
Unreal Engine Issues
Add Substrate Material Support to Lumen Performance Overview
UE - Graphics Features - Substrate - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...
DMX component in world partitioned level fails cook
UE - Virtual Production - IO - DMX - Feb 10, 2025Since UE5.5, RegisterComponent has been called during cook process, So unnecessarily references from DMXLibrary to DMXComponent has been added. There is a workaround to avoid adding references : ...
[AI] Navigation System can be constructed in situations where the NavigationObjectRepository subsystem is not valid
UE - AI - Navigation - Feb 7, 2025Investigate and fix all calls where the Navigation System is constructed without the NavigationObjectRepository subsystem being valid. ...
[Interchange] Crash on asset re-import
UE - Editor - Content Pipeline - Import and Export - Feb 7, 2025We've started seeing a crash in editor when re-importing one of our assets. <pre class="ql-syntax">Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 783] Array index out of ...
[AI] Navmesh tiles on different layers get removed while streaming out in WP Dynamic Modifiers Only navmesh
UE - AI - Navigation - Feb 6, 2025Streaming out the navmesh and streaming the area back into the world before the GC runs causes the navmesh streamed back into the world to only have navmesh tiles on a layer with tiles that would b ...
(GAS) Block tags are ignored in version 5.5.2 if two abilities share the same parent tags structure.
UE - Gameplay - Gameplay Ability System - Feb 5, 2025Block tags are not working correctly in version 5.5.2, it was working in 5.5.1. This is caused by a change done in version 5.5.2. The exact CL is: CL 35930696 ...
Mesh particles are inadvertently culled when NiagaraActor scales large
UE - Niagara - Feb 5, 2025When a large scale value (e.g. 500) is set on the NiagaraActor, the mesh particle is unexpectedly hidden. This may be a side effect of the following change ([Link Removed]). PrimitiveData.NonUnifo ...
Fixup of spawnables from 5.4 to 5.5 loses custom track names
UE - Anim - Sequencer - Feb 5, 2025In the process of upgrading from 5.4 to 5.5. One of our systems relies on the internal track names in the sequence to dynamically find an actor to bind the track to. As I was testing the system in ...
Building Geometry Stops UTickableWorldSubsystem Ticking
UE - Gameplay - Jan 31, 2025Can be mitigated by reopening the Level. There is a repro project provided by the licensee on the case ticket. ...
MRQ Graph - No Output Written to Disk with UNC Paths
UE - Anim - Sequencer - MRQ - Jan 30, 2025When using a Movie Render Graph config, no output is written to disk if the Output Directory is set to a UNC path. This does work with legacy presets. To fake a UNC path locally, use this conventi ...