Unreal Engine Issues
Unreal Engine Issues
Landscape 'crack free displacement' option causes landscape layer coords and UVs to be wrong
UE - LD & Modeling - Terrain - Landscape - Aug 25, 2015If you check the 'crack free displacement' option in a landscape material, it seems to break the results of both the landscape layer coords and regular UV input node. Worldposition is not affected. ...
Using the end of the curve as a weighted tangent does not yield the expected value.
UE - Runtime - Animation - Oct 16, 2023When changing the tangent value, the last value is sometimes not 1.0 [Reproduce sample project] [Link Removed] ...
Misspellings in Material_Properties level of ContentExamples
Docs - Samples - Jan 18, 2017In the Material_Properties level of ContentExamples, separate is misspelled in demo display 1.6 and tessellation is misspelled in demo display 1.8. ...
Crash when using "Convert to Seeded" on a Cascade Module
UE - Graphics Features - May 2, 2016Crash when using "Convert to Seeded" on a Particle System Cascade module This is a Regression as it does not occur in 4.10 Error message: Assertion failed: *Offset < (uint32)InstancePayloadSize [ ...
Chaos: geometry collection with One Way Interaction never breaks from its own collisions
UE - Runtime - Simulation - Aug 21, 2026A geometry collection with One Way Interaction Level set to 0 never breaks from its own collisions. It falls, lands, and stays intact no matter what it hits. Set the level to -1 (feature off) and ch ...
LIVE: EDITOR: Extremely large trigger volumes registering overlaps multiple times upon single overlap event
UE - Simulation - Physics - Sep 9, 2014Update: 1/27/2015 User reporting multiple overlap events/end over lap events firing on smaller triggers, their specific dimensions were 400 uu x 2000 uu on a capsule Build: 4.4.2-2289767 Descript ...
[CrashReport] UE4Editor_MeshPaintMode!FPaintModePainter::FinishPaintingTexture() [paintmodepainter.cpp:1671]
Tools - Sep 14, 2017This is a somewhat common crash affecting users in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 1660 { 1661 FScope ...
Crash when attempting to change the parent of a material instance constant through editor scripting
UE - Rendering - Architecture - Materials - Apr 9, 2025The built-in class "UMaterialEditingLibrary" provides various editor scripting functions related to creating and editing materials and material instances. One of these functions, UMaterialEditingLib ...
Crash when force deleting Dataflow Graph
UE - Editor - Jul 31, 2023When force deleting a dataflow graph with the dataflow graph editor open it will crash the engine. This issue is occurring in Binary //UE5/Release-5.3 @ CL 26560699 This issue is occurring in Binar ...
Texture reprojection from one plane to another produces displacement map with a pattern
RS - Texturing - Mar 4, 2025Found in 1.5.1.118081 Project: [Link Removed] Message from customer: "The problem occurs when using the texture reprojection tool on a surface scan to bake model details onto a simple bake plane ...