Unreal Engine Issues
Unreal Engine Issues
Buffer Visualization Modes Are Inaccurate
UE - Graphics Features - Apr 19, 2018In 4.18, Buffer Visualization Modes appear very similar to their representation in Buffer Overview. In 4.19 and Main (CL 4008322) the results are very blown out. Similar issue reported in [Link Remo ...
Complex collision mesh might lose its collision in the editor
UE - LD & Modeling - Modeling Tools - Mesh Editing - Feb 18, 2020This is affected by loading order. In the case, display mesh was loaded firstly and try to build collision mesh form complex collision mesh asset. But the collision mesh didn't finished to make Ren ...
Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location
UE - Simulation - Visual - Jun 22, 2025Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location. When that flag is true, the moment the GeometryCollection (GC) ...
This user's project presents an Engine/Transient save error on certain Blueprints
UE - Gameplay - Blueprint - Apr 10, 2015This user's project presents an Engine/Transient save error on certain Blueprints. When saving the CharmState Blueprint, this message pops up: Can't save ../../../../../UserProjects/jeffvoight_ciic ...
Steam Overlay does not show in Win64 Shipping builds when run outside of Steam
UE - Networking - Nov 11, 2015Steam Overlay does not show in Win64 Shipping builds when run outside of Steam. The Steam client can be running, but unless the .exe is opened through Steam itself, the Overlay will not appear. Note ...
[CrashReport] UE4Editor_Engine!UTextureRenderTarget::GameThread_GetRenderTargetResource() [texturerendertarget.cpp:44]
UE - Editor - UI Systems - Jul 21, 2017This is a common crash that has been affecting users since at least 4.15. This may be the same issue as [Link Removed], which was closed due to inactivity User Descriptionsloading a level Source ...
UE5.6+ - Mutable - IDPrefix crash when combining Child Objects, Add to Mesh Component and Extend Mesh Section.
UE - Anim - Mutable - Jul 21, 2025So the issue seems to be a combination of Add To Mesh Component and Extend Mesh Section. I've tried this in Epic Launcher 5.6, 5.6 in-house modified engine as well as ue5-main 5.7 from git (editor ...
Import then cancel while file is read leads to potential crash
TM - Interoperability - Oct 6, 20251/ Import a file with mootools such as an fbx 2/ while the file is still read, cancel the import Result : may crash few times after (when theoretically the file has finished being read) - not repr ...
Stationary/Movable Lights render based on distance from World Origin in Orthographic Camera View
UE - Graphics Features - May 20, 2016When using the Orthographic Camera view (such as that used with the Paper2D Template) any lights that are distant from the world origin will start to fade out as if they are being culled. The distan ...
Unexpected behavior from moving multiple widget components with render transform
UE - Editor - UI Systems - May 10, 2017Unexpected behavior occurs from moving multiple widget components with render transform applied to them. The individual components seem to change relative position or rotation when being clicked and ...