Unreal Engine Issues
Unreal Engine Issues
Distance Field AO from Moveable Skylight (non-Lumen) invalidates AO incorrectly with a screenspace offset to the right of moving objects
UE - Graphics Features - Mar 25, 2025When Global Illumination is set to “None” in the project settings the ambient occlusion does not correctly render shadows for moving objects. This has been observed in versions 5.4 and above. ...
Video material previews incorrectly on Mac
TM - Rendering - Apr 3, 2025Received multiple reports of users on Mac computers experiencing issues previewing video materials in Twinmotion 2025.1. When adding video materials to the scene, the scale seems to be incorrect an ...
Editor crash when building lighting and world partition minimap
UE - World Creation - Worldbuilding Tools - World Partition - Apr 17, 2025It is possible for an editor crash to occur if a build is running (Lightmass in this case) and another is launched such as Build World Partition Minimap (as well as HLOD and Spline builders). This i ...
ChordBlockers don't work as expected when ChordAction is set in InputAction
UE - Gameplay - Input - Jun 3, 2025In the Enhanced Input System, when using a UInputTriggerChordAction to define a chorded input (e.g., Shift + W), the automatic chord blocking system (UInputTriggerChordBlocker) only functions correc ...
Standalone Level Instance with WorldPartition world don't load in editor
UE - World Creation - Worldbuilding Tools - Level Instances - Dec 2, 2025A WorldPartition map used as a level instance that's set to standalone mode doesn't load its actors in the editor. ...
SkeletalMeshSimulationComponent does not work
UE - Simulation - Physics - Oct 28, 2019SkeletalMeshSimulationComponent does not effect the simulation of geometry collections to interact with skeletal meshes and setting the component to dynamic results in a crash. ...
Attaching New Camera Actor to Spring Arm Component does not set the Location Correctly
UE - Gameplay - Blueprint - Apr 2, 2015After adding a new Camera Actor Component within Blueprints to an existing Spring Arm Component, the Camera Component adopts the location settings , but does not set its location within the viewport ...
The World Outliner doesn't refresh after Seamless Travel
Tools - Apr 27, 2015The World Outliner doesn't refresh after Seamless Travel. Enabling any of the View Options will refresh the list to properly show the actors in the current level. Reproduced in 4.7.6 binary and Mai ...
[CrashReport] UE4Editor_BlueprintGraph!BlueprintActionFilterImpl::IsEventUnimplementable() [blueprintactionfilter.cpp:588]
UE - Gameplay - Blueprint - Jun 1, 2016This crash has been reported through the 4.12 Previews and is continuing to occur in the 4.12.0 release. Additional information about this crash is not available at this time, however it may be the ...
RecreateLandscapeCollision console command regenerates collision over landscape holes
UE - LD & Modeling - Terrain - Landscape - Feb 13, 2015Using console command 'RecreateLandscapeCollision' resets collision in areas that landscape hole materials have been placed. Workaround: paint new hole material to re-remove collision from areas w ...