Unreal Engine Issues
Unreal Engine Issues
The AngularLimit visualizer isn't displayed as expected when adjusting the AngularRotationOffset
UE - Simulation - Physics - Dec 9, 2016The AngularLimit visualizer isn't displayed as expected when adjusting the AngularRotationOffset. You can manually rotate the PhysicsConstraint and it will rotate the AngularLimit visualizer, howe ...
Stationary/Movable Lights render based on distance from World Origin in Orthographic Camera View
UE - Graphics Features - May 20, 2016When using the Orthographic Camera view (such as that used with the Paper2D Template) any lights that are distant from the world origin will start to fade out as if they are being culled. The distan ...
Destructibles using Form Extended structures with rigid body collision gives wrong hit result
UE - Simulation - Physics - Destruction - Jan 7, 2015DESCRIPTION: When using form extended structure with DMs that are hit by a rigid body the resulting hit does not reflect the correct actor if they are both using form extended. If a DM without form ...
UAbilityTask_SpawnActor::BeginSpawningActor may return true when SpawnedActor contains stale value
UE - Foundation - Mar 15, 2026UAbilityTask_SpawnActor::BeginSpawningActor assumes the incoming AActor*& SpawnedActor parameter is nullptr if no actor was spawned, but it does not initialize the parameter at the start of the func ...
Crash when saving a Data Table that is referencing itself in a Data Table Row Handle
Tools - Feb 23, 2017Crash when saving a Data Table that is referencing itself in a Data Table Row Handle. Reopening the project also causes a crash. *Regression: Yes This was fixed and working in 4.13-3037605 This i ...
A crash occurs inside the Unreal Editor when we change the Spline Point type of a spline point, and we subsequently select another spline point
UE - Editor - Jul 22, 2024In versión 5.4, a crash has been found when using splines inside the LevelViewport. This crash occurs when we change the Spline Point Type of a spline point, and subsequently we select another splin ...
UMG Widgets using User Interface Material Domain do not render on Android Devices
UE - Platform - Mobile - Jan 19, 2016When using a Blueprint Widget that has an image using a material in the User Interface Material Domain will not render when it's a newly created project in 4.11. However, if you were to copy a proje ...
Failed to generate Nanite data for mesh with bDoFastBuild enabled
UE - Graphics Features - Nanite - Oct 1, 2025If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...
[CrashReport] UE4Editor_Engine!FAVIWriterWin::Initialize() [aviwriter.cpp:239]
UE - Anim - Sequencer - May 24, 2016Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 224 225 hr = Graph->AddFilter(CaptureFilter, L"Capture"); 226 if ...
Geometry Collection cluster handles leaking and causing ensures with field systems
UE - Simulation - Visual - Aug 26, 2025Geometry Collection cluster handles leaking and causing ensures with field systems. The licensee has shared their analysis: We have been tracking down an assert that seems to happen occasionally wh ...