Unreal Engine Issues
Unreal Engine Issues
Editor.Plugins.Tools.Modeling.EditorMode.ExtrudePolygons.* test cases fail in headless mode due to stylus error log.
UE - Graphics Tools - Modeling Tools - Jan 15, 2025Hello! In UE 5.5 Preview, new stylus code was introduced, which can cause a test failure in an unrelated test suite, Editor.Plugins.Tools.Modeling.EditorMode.ExtrudePolygons.*. The test indirectly ...
GLTFExporter indexing issue
UE - Editor - Content Pipeline - glTF - May 29, 2025Hi, I also ran into an issue when exporting a skeletal mesh that has multiple sections that all share the same material slot. It looks like the index buffer that's constructed is incorrect. In GLTF ...
Mover character flickers downward while crouched and moving every so often
UE - Gameplay - Player Movement - Mover - May 8, 2025Repro Rate 5/5 Packaged onWindows - 10 - Enterprise - L3864 Processor: AMD Ryzen Threadripper PRO 3975WX 32-Cores 3.50 GHz RAM: 128 GB GPU: NVIDIA GeForce RTX 3080 GPU Driver Version: 572.83 ...
Attempting to open a map in content browser that is currently loaded in world composition browser crashes editor
Tools - May 12, 2015Attempting to open a map through the content browser will crash the editor if that map is opened as a sublevel or the currently opened map through the world composition browser. Frequency: 2/2 Cr ...
libfbxsdk Crash on importing FBX with Animation
Tools - Nov 4, 2015When importing the attached FBX file, the engine crashes the libfbxsdk module. The same FBX can import successfully into 4.9.2 with only bone errors listed in the Message Log. Crash Reporter Link: ...
Editor will crash while instancing nested AIPerception component template subobjects in an AIController-based Blueprint class during compile-on-load.
UE - Gameplay - Blueprint - Mar 23, 2018User report of an assertion that fires on editor reload during an attempt to reload an AIController-based Blueprint class with a dependency on a child Blueprint class, both created in a previous edi ...
The Merge Actors Tool doesn't account for rotated collision shapes when doing non-uniform scaling
UE - Gameplay - Aug 30, 2016Collision shapes for merged actors using the Merge Actor tool do not account for the rotation of the actor when combining the data. It looks like the X and Y collision shape rotation in the world ...
Execute Console Command r.SetRes Fullscreen breaks Dynamic Skylights when tied to Event BeginPlay
UE - Graphics Features - Apr 6, 2017Using the Execute Console Command 'r.SetRes 1920x1080f' directly with an Event BeginPlay node within blueprints, any Stationary/Movable Skylighting information is no longer visible. A simple workar ...
[CrashReport] UE4Editor_ApplicationCore!FindWindowByHWND() [windowsapplication.cpp:357]
Tools - Nov 2, 2017This is a trending crash coming out of the 4.18 release, and may be a regression. Users have not provided any descriptions of their actions when the crash occurred. Source Context 347 stat ...
Skeletal mesh reduction - Material settings are lost when regenerating the LOD in a mesh with a reduced material section
UE - World Creation - Worldbuilding Tools - HLOD - Nov 25, 2020Following code fixes this issue in FQuadricSkeletalMeshReduction::ReduceSkeletalMesh Section.ChunkedParentSectionIndex = bIsChunkedSection ? CurrentParentSectionIndex : INDEX_NONE; // ...