Editor Crash when attempting to enter Mesh Paint / Landscape /Foliage Modes while Simulating

UE - Editor - Workflow Systems - Jan 12, 2017

Editor crash will occur when a user attempts to enter the Mesh Paint, Landscape, or Foliage modes while Simulating. Links to CrashReporter: Foliage: [Link Removed] Landscape: [Link Removed] Mesh Pa ...

LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created

OLD - Anim - Aug 8, 2017

LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created. It seems to be using the LOD Build Scale to double in size on actor merge. This is a regression: ...

Mesh data will be deleted from Static Mesh if added as a Hierarchical Instanced Static Mesh Component through blueprint

UE - Gameplay - Aug 10, 2017

Mesh data will be deleted from the Static Mesh if added as a Hierarchical Instanced Static Mesh Component through blueprint. All of the mesh data (actual geometry) and LODs will be deleted from the ...

AddToPlayerScreen not filling of player screen by widget.

UE - Editor - UI Systems - Jun 21, 2019

At screen resolutions other than 16: 9, widgets added with AddToPlayerScreen can not be completely filled. The final size calculated by GameLayerManager seems to be incomplete. ...

Granular Synth stays silent since it cannot load the sound with Stream Caching enabled

UE - Audio - Jun 1, 2020

Using Granular Synth with Stream Cache enabled, Granular Synth will stay silent since it cannot load the sound with Stream Caching turned on. This was reported and tested in 4.25 (CL-13144385). Thi ...

Video material previews incorrectly on Mac

TM - Rendering - Apr 3, 2025

Received multiple reports of users on Mac computers experiencing issues previewing video materials in Twinmotion 2025.1. When adding video materials to the scene, the scale seems to be incorrect an ...

SkeletalMeshSimulationComponent does not work

UE - Simulation - Physics - Oct 28, 2019

SkeletalMeshSimulationComponent does not effect the simulation of geometry collections to interact with skeletal meshes and setting the component to dynamic results in a crash. ...

Visual discrepancy appears with local position offset while mipmaps are enabled

UE - Graphics Features - Oct 20, 2017

There is a visual discrepancy appears with the local position offset while mipmaps are enabled, when using a custom node that takes information from the local position node, with a texture that cont ...

[CrashReport] UE4Editor_SlateCore!FSlateElementBatcher::AddElements() [elementbatcher.cpp:52]

UE - Editor - UI Systems - Slate - Nov 21, 2017

This is an infrequent crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Based on affected project names, this may be a VR is ...

DrawDebugString display wrong position in PIE when changed display scale

Tools - Sep 16, 2020

The display position of the text in DrawDebugString is affected by the scale of the display. Should refer to the Project() of DebugCanvas (not Canvas). -  Suggest Code void AHUD::DrawDebugTextL ...