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] ...

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 ...

Mac editor mobile preview crash with MSAA on

UE - Platform - Mobile - Mar 1, 2021

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

MRQ - Skeletal Mesh motion vector are output only for the last sample of Spatial Sample Count

UE - Anim - Sequencer - MRQ - Jan 24, 2025

Skeletal Mesh motion vectors are output only for the last sample of Spatial Sample Count, while Static Mesh motion vectors are output in all samples. UDN: [Link Removed] Slack thread: [Link Remo ...

AnimNotify does not register when used in code

OLD - Anim - Jun 7, 2016

NotifyQueue.AnimNotifies Does not register the notifies set in the editor. EX: NotifyQueue.AnimNotifies.Num() will always return 0 even when notifies are set ...