FBX imported skeletal mesh has incorrect axis directions

UE - Editor - Content Pipeline - Import and Export - Aug 20, 2019

The axis the FBX is imported with has been inversed from prior versions. See attached screenshots. This causes issues specifically with vehicles, where the movement is happening into the forward dir ...

[Synth][Tone Generator] - Editor crashes when Starting Synth Component Tone Generator

UE - Audio - Mar 29, 2022

Starting a SynthComponentToneGenerator crashes the editor with the following assert:Assertion failed: bSuccess [File:D:\build\++UE5\Sync\Engine\Source\Runtime\SignalProcessing\Private\AudioBufferDis ...

Simulated physics bodies not working properly with BP Move Component To node

UE - Simulation - Physics - Jun 5, 2015

This 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 ...

LIVE: Editor crashes when attempting to use erosion tool on landscape (4.6 preview)

UE - LD & Modeling - Terrain - Landscape - Nov 17, 2014

The editor crashes while attempting to use the erosion tool on a landscape in editor. Frequency: 2/2 Callstack: <unknown module>! KERNELBASE!RaiseException() <unknown module>! UE4Editor_Core!FO ...

Unable to change the 'Actor to Track' on Cine Cameras when the target Actor is in a different Sublevel

UE - Anim - Sequencer - Jul 2, 2018

You are unable to track Actors that are in different sublevels when using Cine Cameras. The 'Actor to Track' is set back to none if the target Actor isn't in the same sublevel as the Camera. This is ...

Simulated Proxies using UCharacterMovementComponent slide around after moving

UE - Gameplay - Player Movement - May 15, 2019

UCharacterMovementComponent::SimulateMovement line 1729 checks: if (!bHandledNetUpdate || !bNetworkSkipProxyPredictionOnNetUpdate || !CharacterMovementCVars::NetEnableSkipProxyPredictionOnNetUpdate) ...

Duplicating Example Level Prevents the Copy From Being Saved

Tools - Oct 27, 2015

In a project, if you duplicate the example level and attempt to save it, the save will finish, but the asterisk will remain on the file. Attempting to open the duplicated map will prompt another sav ...

PhysX Crash when spawning Instanced Static Mesh actors at Runtime

UE - Simulation - Physics - Destruction - Oct 13, 2015

Bug generated from crash reporter. This crash has been found in 4.7.6 and still occurs in 4.8.3 and 4.9.2 to users. One user in particular still, and he experiences it often. I have not been able ...

Volumetric Lightmaps do not work with Landscape texture mapping

UE - Graphics Features - Feb 13, 2019

It appears that the Lightmass Volumetric Lightmap does not work with Landscape textures. When it samples the Landscape with some textured material, the resulting lighting build data does not match t ...

Client movement and animation are heavy jittered on listen server

UE - Gameplay - Player Movement - May 10, 2019

The listen server will see jitter in clients character movement and animations. This is hard to notice without the "slomo" command but is extremely obvious using "slomo". Clients will see server and ...