Unreal Engine Issues
Unreal Engine Issues
Editor crash when building lighting and world partition minimap
UE - Engine Scaling - Streaming - 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 - Engine Scaling - Streaming - 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. ...
New folder shortcut (Ctrl+Shift+N) does not work in multi-Content Browser layouts until a folder is manually focused
UE - Editor - Sep 23, 2025In multi–Content Browser layouts, the New Folder shortcut (by default Ctrl+Shift+N) does not work immediately after switching to another Content Browser tab. It appears that the editor does not auto ...
GPU Scene reserved resources can break Niagara mesh preview rendering
UE - Rendering - Architecture - Niagara - Sep 28, 2026When a Niagara emitter has multiple Mesh Renderers and each renderer draws a different subset of particles (via Renderer Visibility), all renderers are drawn using the color of particle index 0 in t ...
Spline Array created in code cannot be edited in a blueprint
UE - Gameplay - Components - Apr 20, 2015If a TArray of spline components is created in code it is not possible to edit/add nodes to the spline inside a blueprint. ...
Spline Mesh Component created from KML file doesn't render in PIE after spline point change
Tools - Oct 8, 2015Spline Mesh Component created from KML file doesn't render in PIE after spline point change I cannot get this to occur outside of the users test project. He is pulling data from a KML file, creatin ...
Emissive for Static Lighting looks incorrect when using lower Static Lighting Level Scale
UE - Graphics Features - Jun 13, 2016When using a lower value for Static Level Lighting Scale in the World Settings under Lightmass the blending of the area lights is not blended together for a smooth emissive look. Instead, there are ...
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 ...
DetourCrowdAIController causes AI to update movement differently
UE - AI - Apr 3, 2015When you use MoveTo BT node, with a target set as Actor and your AIController is DetourCrowdAIController, the AI pawn will update its goal destination much less frequently. Instead of constantly fo ...