FCPXML export is off by one frame

UE - Anim - Sequencer - Feb 10, 2021

It looks like FCPXML is off by one frame for the MRQ export. For the old movie scene capture tool, it appears correct. ...

Static Mesh Scene Actor Flipped Normals

UE - Rendering Architecture - Aug 31, 2023

Static meshes can have normals flipped when the actor they are attached to has one component of its scale inverted. ...

[CrashReport] UE4Editor-Core.dylib!<Unknown>

OLD - Anim - Dec 31, 2015

[Link Removed] ...

Crash in PCGComponent during file load for file with vegetation from placement tools

TM - Rendering - Jul 14, 2025

Reported in SF [Link Removed] Client has a file that consistently crashes during loading in the PCGComponent.cpp that appears to be linked to placed vegetation. Crash occurs during file open and m ...

Spawn actor of class does not work in packaged game

UE - Gameplay - Blueprint - Jul 1, 2015

Spawn actor from class does not work when playing in a packaged game. ...

Crash while unloading a streaming level while spawned decals exist in the unloaded level

UE - Graphics Features - Aug 18, 2017

When unloading a level containing a decal that is using a dynamic material instance the editor will crash. ...

HighResShot's bDumpBufferVisualizationTargets does not work on PNG output.

UE - Rendering Architecture - RHI - Jun 2, 2022

If the same command is executed with 4.27, multiple screenshots will be saved. ...

BSOD when launching Twinmotion on NVIDIA 50-series GPUs with 576.02 Drivers

TM - Rendering - Apr 22, 2025

Reported from multiple users. NVIDIA RTX 50-series GPU users are reporting BSODs when attempting to launch Twinmotion with the latest drivers installed. The crashes occur on the 576.02 driver versi ...

Rewind debugger would crash when recording a character using Pose search

UE - Anim - Gameplay - Aug 8, 2025

Our character is using the Pose search setup from GameAnimation content example. The architecture of the system is most the same with some new function that account for some input difference and sp ...

Mac editor mobile preview crash with MSAA on

UE - Platform - Mobile - Mar 1, 2021

setting  GSupportsTimestampRenderQueries=false or r.GPUStatsEnabled=0 can fix it ...