Unreal Engine Issues
Unreal Engine Issues
Crash when displaying lumencards on map with many objects
UE - Graphics Features - Lumen - Aug 1, 2025There is a thread conflict between FRDGBuilder execution in Background Worker and LumenVisualizer's LumenCard add/delete process. When lumen cards are displayed in a scene with many objects, a crash ...
Simulated physics bodies not working properly with BP Move Component To node
UE - Simulation - Physics - Jun 5, 2015This issue may reference [Link Removed] which was recently fixed with 4.9 CL-2553675. When using the MoveComponentTo node physics do not work properly compared to other methods to move a component ...
Camera actor preview window does not display properly in orthographic view
Tools - Apr 13, 2015Adding a camera to the scene and setting the projection mode to orthographic doesn't display properly in the preview window. ...
Compiling blueprint with anim bp crashes editor in MathExpr exec
UE - Gameplay - Blueprint - Jan 30, 2016Compiling a player character blueprint that is tied to an anim bp crashes the editor. Frequency: 2/2 Crashreporter: N/A ...
LIVE: The editor crashes on Mac when attempting to open the attached Media Player .uasset
Tools - Nov 4, 2014Does not occur on PC. CRASHREPORT: [Link Removed] CALLSTACK: <unknown module>! FOutputDeviceMacError::HandleError() <unknown module>! EngineCrashHandler(FGenericCrashContext const&) <unknow ...
Converting Texture Sample to Parameter when MipValue set to "Level" or "Bias"
UE - Rendering Architecture - Materials - May 27, 2015When a Texture Sample's MipValue is set to something other than "none" (which adds the extra pin), attempting to convert that Texture Sample to a parameter will cause the Editor to crash. (Simple r ...
Mouse cursor appears outside of viewport while in PIE if UE4 and UDK are both open
Tools - Jan 15, 2015Mouse appears outside of viewport window when cursor is dragged off of editor window while UDK is open. This occurs even if UDk is minimized. Note: Cursor will appear outside of editor window but a ...
A bug in UBTService_BlueprintBase makes it impossible to create "deactivation-only" BP implemented BT services
UE - AI - Jan 22, 2016A bug in UBTService_BlueprintBase makes it impossible to create "deactivation-only" BP implemented BT services. ...
Editor crashes on Mac OSX when attempting to access a new game in Strategy Game on Launch
Tools - Oct 21, 2014While launching StrategyGame to a Mac OSX desktop, the editor will crash if the user attempts to start a new game from the main menu. Frequency: 4/4 ...
Rendering issue when moving the Collision Presets' Edit Profile window
Tools - Nov 20, 2014The user is reporting a rendering issue when moving around the Edit Profile window in Project Settings > Collision > Presets. Dxdiag is attached. The user has an HD7950 and has updated to the late ...