GPU specific issue with Lighting while moving - GTX 770

UE - Graphics Features - Apr 26, 2017

While testing GPU - ContentExamples - Lighting - Nvidia gtx 770 in the 4.16 GPU Compat Pass, I noticed a strange effect on lights while the player is in motion. I've had multiple people attempt to ...

Creating blueprint based on landscape crashes editor

UE - LD & Modeling - Terrain - Landscape - Aug 24, 2016

If a blueprint is created from a landscape object, the editor will crash. Frequency: 5/5 ...

Edits to floating point properties do not propagate to blueprint object instances if old values have more than 6 decimals of precision

UE - Editor - Verse Class Editor - Apr 28, 2023

[Link Removed] JH 2023-04-28 01:12:36 UTC Editing any object's float/double property via an Editor details panel will be truncated if it has more than 6 decimals of precision. (e.g. if I type in 0.12 ...

Some materials render black on Iphone 6 series phones

UE - Platform - Mobile - Oct 6, 2016

Some materials are not rendering on iphone 6 series devices. They will render completely black on one device but not others in the same series. Replacing the material with a basic material renders o ...

Geometry in sublevel created with "Load Level Instance" ignores level transform

UE - LD & Modeling - Modeling Tools - BSP - Sep 26, 2017

Geometry in sublevel created with "Load Level Instance" ignores level transform. Other objects, such as Static meshes are affected by the transform. This issue is not a regression. Versions tested: ...

Play Media Player Node Causes Blueprint Functions to be Uncallable

UE - Gameplay - Blueprint - Feb 23, 2016

This only occurs in standalone or a packaged game Having a Play Media Player node in a blueprint causes all of that blueprint's functions to become uncallable. Found in 4.11 Preview 5. Reproduced ...

Editor ensure in USceneComponent::OnComponentDestroyed during Blueprint compilation GC

UE - Framework - Components - Jan 15, 2026

An editor-only ensure can trigger during BP compilation when garbage collection cleans up transient components created as part of component replacement. During recompilation, old component instances ...

Broken hair material with light function

UE - Graphics Features - Dec 19, 2024

Hair Materials do not react to Light Functions in the same way as other Materials. There is a visual difference between a Directional Light at 1 lux with no Light Function and a Directional Light at ...

Editor Crashes when placing a widget blueprint from one widget blueprint into another via the user created section

UE - Editor - UI Systems - Oct 8, 2014

CHANGELIST: 4.5.0-2316912 CRASHREPORT: Did not produce an error report CALLSTACK: Did not produce an error report DESCRIPTION:   Editor Crashes when placing a widget blueprint from one widget b ...

BP: DEBUG: Debug filter automatically switches to one of the instances of blueprint which doesn t let user debug other instances of blueprint

UE - Gameplay - Blueprint - Aug 5, 2014

GameVersion Branch: UE4 Configuration: Main Version: 2242091 CommandLine:qagame -log Label: GUBP Node Shared_LabelPromotable built from changelist 2242091 DESCRIPTION: Debug filter automatically sw ...