Unreal Engine Issues
Unreal Engine Issues
Particle Lights do not honor Lighting Channel assignments
UE - Niagara - Jul 15, 2016Particle system light's module does not use Lighting Channels. The particle system itself will accept lighting from it's assigned lighting channels but the lights spawned from the particle system, n ...
Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints
UE - World Creation - Worldbuilding Tools - Level Instances - Oct 27, 2022This is not a regression. Tested in //UE5/Release-5.0 CL 20979098 Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints. Rerunning the Build > Pack Level Ac ...
Lightmass GI doesn't work with Material-based color changes
UE - Graphics Features - Sep 4, 2015A licensee is having trouble getting the visual results they want because Lightmass doesn't seem to handle color changes from materials. They are seeing this in 2 cases: (See attached images and tes ...
Request for 'Switch on Int' nodes to throw a warning or auto refresh if an execute pin is removed
UE - Gameplay - Blueprint - Nov 17, 2016Request for 'Switch on Int' nodes to throw a warning or auto refresh if an execute pin is removed. For example: If the 0 pin is deleted, users may not realize the pins will reset back to (0,1,2,3,e ...
Get World Delta Seconds Not Pausing When Hitting a Breakpoint
UE - Gameplay - Blueprint - Feb 11, 2016When debugging a blueprint using breakpoints, if you click the Resume button while you have Get World Delta Seconds running on tick, it will always return a maximum clamped value of .4 seconds (or l ...
Unable to change Actor Coloration View Modes in PIE
UE - World Creation - Worldbuilding Tools - Jul 20, 2025When in PIE changing Actor Coloration view modes from the viewport visualisation mode [Liit] -> [Actor Coloration] -> ... Does not update correctly when switching view mode and sometimes isn't corr ...
Nanite Tessellation Artifacts With Landscapes
UE - Rendering - Graphics Features - Nanite - Dec 4, 2024There seems to be an issue with how Nanite tessellation and Landscape interact with two sided landscapes. When the camera's near clipping plane is past the landscape's surface the displacement of th ...
The DemoRec console command crashes the editor if used during PIE
UE - Networking - Aug 5, 2015The DemoRec console command crashes the editor if used during PIE. Reproduced in 4.9 Preview 2 binary and 4.9 Releases (//depot/UE4-Releases/4.9/Promotable-CL-2643093). Does NOT occur in 4.8.3 bina ...
AssetManager can load blueprints of the wrong type when redirectors exist
UE - Gameplay - Sep 29, 2017The logic in the AssetManager to determine if a scanned Blueprint should be added to the primary asset directory is wrong if that blueprint has an active redirect targeting it. The simplest way to r ...
LIVE: EDITOR: FBX: Combined Meshes Flag does not work when importing multiple LODs in a single FBX
UE - Editor - Content Pipeline - Import and Export - Oct 10, 2014BRANCH: MAIN CHANGELIST: 2322258 PLATFORM: Windows DESCRIPTION: When importing a mesh into the editor if there are multiple LOD setup meshes in a single FBX they will not import as a single asset w ...