Anim with rate scale other than 1.0 will not loop correctly in Sequencer when using an Anim Blueprint

UE - Anim - Sequencer - Sep 13, 2019

Animations are looped incorrectly when using an animation blueprint and a rate scale other than 1.0 in Sequencer. ...

Ray Traced Ambient Occlusion Uses Resources Even if AO Intensity is 0

UE - Graphics Features - Lumen - Aug 22, 2019

Ray traced Ambient Occlusion is still active even when Ambient Occlusion Intensity is set to 0 in the Post Process Volume. Found in 4.22 CL# 7053642, 4.23 CL# 8115738, 4.24 CL# 8124506 ...

Simulate physics on an actor and then using slomo 0 console command causes force being added to mesh

UE - Gameplay - Aug 5, 2015

If an actor has had simulate physics enabled and then the console command Slomo 0 is used, force will be added to the mesh, causing it to fly. ...

Null Redirector For Main Game Level Is Packaged Without Error After Fixing Redirector

Tools - Feb 24, 2020

After moving a level into a folder and fixing the redirectors (right click in content browser) the project will package a Null reference without throwing an error. This will let you create a project ...

Multiple Blueprint compilation passes required to fix up event binding to dispatcher after event rename

UE - Gameplay - Blueprint Compiler - Nov 30, 2021

Renaming a custom event bound to an event dispatcher via a Create Event node requires two compilation passes to fix up the binding.  upd. Regression was checked on //UE4/Release-4.26 CL 15973114, i ...

Value for how long jump key is held is not updating while PIE and max jump count is 0

UE - Gameplay - Apr 14, 2017

I'm at a loss for what is going on here. This was observered while working through the first 2 steps of UEQAT-2780 (JumpTest.PNG shows those steps). This works in 4.15.2, but not in 4.16. If you cha ...

UMG Slider displays long or wrong percentages when Step Size is set to 0.1

UE - Editor - UI Systems - Apr 24, 2020

When the Step Size is set to 0.1 for a Slider and Slider value is multiplied by 100, it will display weird numbers when moving the slider back from 100%. Changing the Step Size to 1 and changing th ...

Assertion failed: (Index >= 0) & (Index < ArrayNum) when importing large Alembic file

UE - Editor - Content Pipeline - Datasmith - Importer - May 3, 2022

Regression testing done on //UE4/Release-4.27.2 CL-18427296 and this issue did occur. [Link Removed] [Link Removed] Below is snips of customers description and proposed workaround:Importing alembi ...

When IOStore is enabled, -createchunkinstall separates out chunk-non-0 pak files but not utoc/ucas files

UE - Foundation - Data Pipeline - Cooker - Dec 12, 2022

The -createchunkinstall option is used to separate out chunk>0 CDN/patch data from the main packaged app, but when using it with the IOStore enabled, only the pak files are separated out but not the ...

Child actor primitive root component failing to decrement attachment counter to 0 before UPrimitiveComponent::FinishDestroy

UE - Framework - Components - Aug 8, 2024

Dragging a BP actor containing a child actor component of an actor class with a static mesh as its root component into the scene viewport will cause artifacts and hit SceneData.AttachmentCounter.Get ...