Unreal Engine Issues
Unreal Engine Issues
Skeletal Mesh Attached Via Socket Rotates Collision in Unexpected Manner
UE - Simulation - Physics - Jun 22, 2018Collision snaps to socket at an unexpected angle. See attached screenshot for breakdown on what is expected and unexpected. Description provided by user: the collider of the root bone is turned - ...
Physics not reacting correctly with physical material if velocity is not high enough
UE - Simulation - Physics - Feb 3, 2015There are issues with the way Physics is being handled with physical materials. Having a physical material setup with a restitution of 1 and a high max depenetration value will result in no bounce. ...
abnormal sound output on UMG animation track
UE - Anim - Sequencer - Jan 28, 2022Sound repeated at initial frame only on 4.27. it was worked fine on 4.26 and 4.25 It is probably a side effect caused by the sequencer changes below. Sequencer: Move Finalization phase back onto ...
Reliable multicast RPCs can be dropped
UE - Networking - Dec 23, 2015As detailed in the linked UDN thread, if a server doesn't receive a network packet from a client in 1.5 seconds, it sets the client connection's ViewTarget to null. This will cause dropped reliable ...
Log message in ExclusiveLoadPackageTimeTracker is written incorrectly and means the opposite
UE - Foundation - Core - Oct 20, 2016A licensee has pointed out that a log message in ExclusiveLoadPackageTimeTracker at line 191 is saying the opposite of what it means. This is the line in question:UE_LOG(LogLoad, Log, TEXT(" ... ...
Division by zero causing NaN/Inf on USkeletalMeshComponent::UpdateRigidBodyScaling() when setting scale to zero and back
UE - Simulation - Core - Feb 11, 2026Up to UE 5.5, skeletal mesh physics did not get updated when the component's scale changed. This was improved on January 2025 with CL 39190335, which addressed [Link Removed] ...
Logic error in TRange::Difference causes crash when you Trim and Preserve Left/Right and unbounded Attach section in the sequencer
UE - Anim - Sequencer - Aug 1, 2024TRange::Difference function does not handle bounds correctly, causes crash in the sequencer when "Trim And Preserve Left/Right" is used in the user's example project. User provided a potential fix: ...
iPadPro2 Splash Screen distortion on app Launch
UE - Platform - Mobile - May 7, 2018iPadPro2 splash screen distorted on app launch. Looks like there is a fix for this in FN branch that can be brought over. Engine/Source/Runtime/ApplicationCore/Private/IOS/IOSAppDelegate.cpp http ...
PseudoVolumeTexture inverted on GL
UE - Platform - Mobile - Oct 16, 2018UDN report: Hi, This is not really a question, but I just wanted to point something. It seems that the PseudoVolumeTexture method in common.ush is not working the same way between DirectX and Ope ...
LiDAR plugin crashing with VR Instanced Stereo enabled
UE - Platform - XR - Jan 26, 2023When enabling LiDAR plugin with VR Instanced Stereo enabled it causes a crash. Alternate repro: From Any project Enable Instanced Stereo in project settings Enable LiDAR Point Cloud Support Restar ...