Unreal Engine Issues
Unreal Engine Issues
Physics Constraint no longer constrains components that are set to Query Only
UE - Gameplay - May 5, 2016Physics Constraint no longer constrains conponents that are set to Query Only Regression from 4.11.2 User Description: Testing a 4.12 copy of my 4.11 project and when I tested in editor, all my ...
Editor crash when using Animation BP pose watch
OLD - Anim - Apr 7, 2020We encountered a crash when using Anim BP Pose Watches to inspect poses on actors in a PIE instance. Specifically it seems ending the PIE session while the Anim BP is still watching the actor in the ...
A SkeletalMesh component will spawn in rotated when setting the skeletal mesh and simulating physics on Begin Play
UE - Simulation - Physics - Jun 28, 2016A SkeletalMesh component will spawn in rotated when setting the skeletal mesh and simulating physics on Begin Play Adding a Delay between SetSkeletalMesh and SetSimulatePhysics will correct the iss ...
Destructible Mesh spawned before static mesh with World or Asset support is not supported
UE - Simulation - Physics - Destruction - Apr 27, 2015When using World Support or Asset Defined Support on a Destructible mesh that is spawned in, if the static world geometry is spawned in after the DM it will not be supported. However, if the static ...
FileSystemDerivedDataBackend may output a corrupted access log
UE - Foundation - Core - Derived Data - May 20, 2021This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...
The 'Set Constrained Components' node doesn't set the physics constraint components correctly if used in the Construction Script
UE - Simulation - Physics - Jan 20, 2015The 'Set Constrained Components' node doesn't set the physics constraint components correctly if used in the Construction Script. ...
The Sorting Issue Between Height Fog and Transparent Objects
UE - Graphics Features - Aug 21, 2024When a LocalFogVolume is used with ExponentialHeightFog, it does not correctly fog translucent objects. ExponentialHeightFog and Volumetric Fog from a LocalFogVolume both correctly occlude transluc ...
Crash when calling SetState inside state machine OnUpdate
UE - Anim - Sep 5, 2025The crash happens when SetState is called inside the function bound to OutputAnimationPose’s OnUpdate in the animation state. This way of using Set State node is the same as shown in the official do ...
Widget "Listen For Input Action" executes on unexpected input event
UE - Editor - UI Systems - Feb 19, 2020Listen For Input Action firing erroneously. Confirmed in 4.26 MAIN @ CL 11536993 ...
Destructible attached with a Physics Constraint have inconsistent physics
UE - Simulation - Physics - Destruction - Jul 26, 2016Destructible attached with a Physics Constraint have inconsistent physics compared to a standard Static Mesh. This is also sometimes prevalent with Destructibles that aren't attached with a Physics ...