Unreal Engine Issues
Unreal Engine Issues
Niagara GPU particles will always have a lifetime of one second if they use a Collision Module
UE - Niagara - May 2, 2019GPU Particles will always have a lifetime of one second when using a collision module. This is a result of an issue with how off screen timing is handled. GPU particles that are off screen should on ...
Niagara Crash : ExportParticleDataToBlueprint module causes buffer overrun
UE - Rendering - Architecture - Niagara - Aug 10, 2021This buffer overrun is probably caused by the ExportParticleDataToBlueprint module does not respecting the GPUAllocation Fixed Size setting in the module. In fact, out-of-range export data is not c ...
Marketplace plugins "missing precompiled manifest" on Mac
UE - Platform - Mac - Oct 12, 2021Summary This issue was reported by a licensee via UDN. It appears that all of the plugins generate a "missing precompiled manifest" error when packaging a project on Mac in UE4.26.2.Licensee Platfor ...
Atmosphere related scan line artifacts for Path Tracer with MGPU
UE - Rendering - Features - Path Tracer - Feb 10, 2023There are two UDNs related to this issue. It makes the Path Tracer unusable with MGPU, with atmosphere enabled. I already have a one-line fix implemented and tested. The atmosphere scan line arti ...
Multicast RPCs called from standalone instance are not recorded into replays
UE - Networking - Dec 13, 2023This seems to have regressed because of the fix to [Link Removed] Closed . Because UWorld::InternalGetNetMode now only retur ...
Serialized Blueprints containing MIDs do not load correctly in packages.
UE - Rendering - Architecture - Materials - May 8, 2024This issue is an easy fix but raises a different problem which is likely ingrained in UE, which is that MIDs should not be serialized out and should always be transient. Unfortunately we are in a po ...
MakeArray wildcard node gives a compilation error when being used in a Blueprint Macro.
UE - Framework - Blueprint - Dec 19, 2024There is an error with the SmartMacroInterface, where you can't use an empty wildcard "Make Array" node. This error makes the blueprint not compile and the macro unusable. Disabling the bUseSimpleWi ...
Editor Crashes when enabling Vertex Colors on an imported Skeletal Mesh with Morph Target Animations
UE - Graphics Features - Oct 11, 2018Licensee wants to be able to import skeletal meshes which have Vertex Colours (their entire game is Vertex Coloured) and Morph Target animation, but they're seeing a crash when toggling Vertex Color ...
Attempting to set skeletal mesh on vehicle blueprint during PIE crashes editor
UE - Simulation - Physics - Feb 8, 2016Switching the skeletal mesh of an actor during PIE crashes the editor. Frequency: 5/5 Crashreporter: N/A ...
Asset produces error "Failed import for object property" upon loading editor
UE - Gameplay - Blueprint - Jan 18, 2016Filepath for asset referenced in Gamemode blueprint produces error: /Game/ACustom/Code/cBP_Gamemode: Failed import for ObjectProperty /Game/ACustom/HUD/Game_UI.Game_UI_C:STMSG Fix up redirectors ...