Set Material for Particle System via Construction Script in Blueprints is Different is PIE versus Standalone

UE - Graphics Features - May 25, 2017

Differences in PIE and Standalone when attempting to set the Material for a Particle system within the construction script of an actor blueprint. I know there are probably some differences in how P ...

Precomputed Visibility incorrectly Culling Objects in Scene when Opening different Level

UE - Graphics Features - Jun 28, 2017

Objects in a scene are randomly culled when building a level with Precomputed Visibility enabled, and opening another level that has already pre-built precomputed visibility. A couple of things wor ...

Sequencer spawned blueprint functions/variables not firing with correct values on begin play

UE - Anim - Sequencer - Dec 11, 2017

Created in relation to https://udn.unrealengine.com/questions/405764/is-it-possible-to-set-sequencer-spawnables-propert.html Issue relates to behavior of the Event BeginPlay and the propagation of ...

Crash Occurs When Mesh is Reimported Multiple Times in the Mesh Editor

UE - World Creation - Worldbuilding Tools - Foliage - Jan 24, 2018

Engine crashes when asset has been reimported multiple times through the mesh editor -Editor crashes in Main when reimporting -Editor crashes in 4.17 when changing the Import Transforms ...

Enum can lose value in Child actors with component containing a Map of Structs

UE - Gameplay - Blueprint - Apr 12, 2018

Value in an Enum in a Struct in another Struct assigned to a Map in a Component with the Component used on a Child Pawn Class can be reset upon editor relaunch. User submitted bug. (Unsure what int ...

Find and replace reference feature(experimental) crashes after indexing dialog

UE - Gameplay - Blueprint Editor - Jan 30, 2019

FindInBlueprints->CacheAllBlueprints(FSimpleDelegate::CreateSP(this, &SReplaceNodeReferences::OnSubmitSearchQuery, true), EFiBVersion::FIB_VER_VARIABLE_REFERENCE);  This leads to crash. Users can b ...

Tessellation not working properly on Vulkan

UE - Graphics Features - Jan 25, 2018

When a user launches content examples with -vulkan tessellation will not be working. Everything tessellated will appear as if it has no tessellation. This issue is also occurring in 4.18 ...

Procecdural Mesh Components without a material assigned crashes on conversion to Static Mesh

UE - Graphics Features - Aug 6, 2019

This bug doesn't occur in 4.21. The issue is at line 157 in ProceduralMeshComponentDetails.cpp . When the procedural mesh has a material the crash doesn't occur. File location: Runtime/ProceduralMe ...

[Feature Request] 3D Text - Contextual Analysis - Localization

UE - Virtual Production - Nov 21, 2019

New Text 3D plugin does not process contextual analysis for Arabic Expected: Arabic characters should change shape based on the placement of a letter in a word (similar to how in English, a letter c ...

World Space Transparent Widgets Have Motion Blur

UE - Editor - UI Systems - Feb 24, 2020

When a world space widget has their blend mode set to transparent they look blurry in motion. The effect is more pronounced when the camera rotates instead of when it is translated. Found in 4.24.2 ...