Unreal Engine Issues
Unreal Engine Issues
GPU / D3d Crash while editing Landscapes
UE - Graphics Tools - Terrain - Landscape - Mar 7, 2023From licensee: I've been experiencing consistent GPU crashes when tying to edit landscapes since updating to UE5.1. It seems to be exclusively an issue with DirectX 12 (SM5 & SM6). I have no pro ...
Collision between physicalized actors and instanced static meshes produce warnings.
UE - Runtime - Simulation - Sep 25, 2023Collision between an instanced static mesh and a physics simulating actor (with "simulation generates hits events" enabled) results in the following warning: LogChaos: Warning: Collision handler en ...
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 ...
Inconsistent VSM page behavior around the Dynamic Shadow Distance range
UE - Rendering - Features - Shadows - Feb 17, 2026When a sufficiently large object casts shadows near the Directional Light's Dynamic Shadow Distance range, the VSM pages are inconsistent in their shadowing - some will choose to shadow per-pixel, w ...
Self-Shadowing changes when click on and off an actor
UE - Graphics Features - Jun 19, 2015Given a Movable Light with a Movable Mesh with enabled Self Shadow Only, the mesh will not cast inset shadows (despite this option begin forced to true according to Tooltip) unless the mesh is selec ...
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. ...
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 ...
Input from a second gamepad is not detected until the game window is clicked with the mouse
UE - Gameplay - Input - Dec 12, 2014In a packaged local multiplayer game, input from a second gamepad is not detected until the game window is clicked with the mouse. The first gamepad input is detected as expected. ...
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 ...