Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Assertion due to failing to find shader type
UE - Graphics Features - Apr 26, 2017This is an early trending crash in the 4.16 Preview. User information has not been provided, but this shares similarities to an old jira [Link Removed]. Source context: 1434 /** Finds the ...
FMediaFoundationMovieStreamer::Init() returns true even if the movie could not open.
UE - Media Runtime - Media Framework - Aug 20, 2025[CrashReport] UE4Editor_Engine!FUniformExpressionSet::CreateUniformBuffer() [materialuniformexpressions.cpp:382] - IterateOverActiveFeatureLevels
UE - Graphics Features - Jan 5, 2018No user comments ...
[CrashReport] UE4Editor_Landscape!FLandscapeVertexFactoryVertexShaderParameters::SetMesh() [landscaperender.cpp:3137]
UE - LD & Modeling - Terrain - Landscape - Feb 27, 2018No user comments in crash group 3127 if (SectionLodsParameter.IsBound()) 3128 { 3129 if (CurrentLODData.UseCombinedMeshBatch) 3130 { 3131 Set ...
[CrashReport] UE4Editor_Landscape!FLandscapeComponentSceneProxy::DrawStaticElements() [landscaperender.cpp:1631]
UE - LD & Modeling - Terrain - Landscape - Nov 5, 2018User comments in crash group:Enabled Flat Tesselation on a Terrain Material.I saved the material. 1628 if (HasTessellationEnabled) 1629 { 1630 ***** UMaterialInstance* NonTess ...
Android sessions do not appear in Session Frontend
UE - Platform - Mobile - Aug 29, 2016Material ParticleRandom node doesn't have proper value returned in specific case
UE - Rendering - Architecture - Niagara - Jul 14, 2024Mass instanced skinned mesh sweep removes instances without freeing their ASTP tracks
UE - MVF Character - Animation - Oct 7, 2026When an entity stops being batched into an instanced skinned mesh component, the "Collect unwanted items & remove" sweep removes its instance, but never frees its ASTP track. Only ProcessRemovesForC ...
Crash on Mac when adding Convex Collision to a mesh converted from a brush
UE - Platform - Apple - Jun 6, 2017This is one of the top Mac crashes occurring in 4.16. Caused by adding Auto Convex Collision to a mesh converted from a brush. Does not occur on Windows. User DescriptionsI was trying to add a conv ...
'Autosized' SWindow with `.AutoHeight()` elements has unwanted white space
UE - AI Workflows - UI Systems - Slate - Oct 12, 2022Heavily discussed and diagnosed in this thread: [Link Removed] [Link Removed] narrowed down the cause: It's the calculation inside the SWindow that is wrong, sometime. It adds SWindowDefs::Default ...