Cannot successfully create a local binary build of the Engine that includes iOS

UE - Foundation - Build - Rocket (Installed Engine) - Jun 6, 2018

Attempting to create a local binary build of the Engine that includes iOS currently fails. The error message that appears ("ERROR: System.Collections.Generic.KeyNotFoundException: The given key was ...

DataTable Vertical offset when using Windows scaling above 100%

Tools - Jun 22, 2018

If the windows scaling is set above 100% the rows in a data table will become misaligned as more members are added to the data table. Regression: Yes Did not occur in 4.17 - 3658906 Does occur in ...

Cine Camera focus does not blur transparent materials

UE - Graphics Features - Jul 9, 2018

The cine camera focus does not blur transparent materials. Found In 4.18 CL# 3832480, 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, 4.21 CL# 4195822 ...

Steam VR hitch with 3d UMG Widgets

UE - Platform - XR - Jul 30, 2018

After ~30 minutes, a scene with 3D UMG widgets will hiccup, briefly showing the steamVR background Attached Example project from User VRDropedFrame (4.19) + Example project I created AJ_VRWidgetPe ...

Confusing message when attempting to connect mismatched Delegate pins

UE - Gameplay - Blueprint Editor - Aug 26, 2019

When the user attempts to connect delegate pins that don't match, they received a confusing mouse tooltip message that simply reads "Delegate is not compatible with Delegate". Suggested fix: When ...

AnimBP instance is leaked when using linked animation graphs with 3 or more hierarchies

UE - Anim - Runtime - Sep 5, 2022

When creating an AnimBP with 3 or more layers using linked AnimGraph nodes and going through a state where animation is initialized such as replacing SekeltalMesh, the AnimBP on the 3rd layer is not ...

AnimDrawDebug does not work if using RootMotion from Everything

UE - Anim - Gameplay - Feb 14, 2023

Debug drawing with AnimDarwDebug~ does not work when RootMotionMode is set to "RootMotion from Everything". In addition, the same issue occurs when MultiThread of Animation is turned off. Licensee ...

XR Planar Reflections lag behind VR headset movement

UE - Platform - XR - Mar 24, 2023

Planar Reflections lag behind VR headset movement [Link Removed] Reporting that reflection captures lag because they happen before late update is applied. Includes an experimental patch that fi ...

Auto Exposure Compensation Curve issue when switching from Manual to Histogram

UE - Rendering Architecture - Feb 21, 2024

When switching the Camera's Exposure Metering Mode from Manual toHistogram, the exposure level resets and takes time to settle. The Licensee has a proposed code change that would fix this issue. Als ...

Importing static mesh while a PIE session is running permanently breaks nanite on the asset

UE - Editor - Content Pipeline - Import and Export - Mar 12, 2025

Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...