Project Launcher does not include Prereqs. Ignores Include Preqeq setting and the -prereqs argument

UE - Foundation - Cpp Tools - Aug 3, 2018

When using the Project Launcher to package a project, the Include Prerequisites setting is ignored. Attempting to add the -prereqs command to the arguments also does not include these, which is what ...

Curves in compressed additive animations interpolate incorrectly when two keys in a row have the same value

OLD - Anim - Oct 16, 2019

Curves compressed from additive animations will not interpolate correctly if they have two keys in a row with the same value. The second key will be ignored, leading to the curve interpolating earli ...

Corrupted Japanese text when packaging for Android

UE - Platform - Mobile - Apr 17, 2020

Garbled text is displayed when creating Android package. It did not occur in my colleague's environment using English OS, but occurred in my environment using Japanese OS. This issue should be fixed ...

Improper include generated when C++ class is in a subdirectory

UE - Editor - Workflow Systems - Jun 7, 2022

This is not a regression from 4.27.2, however, a similar issue was fixed in 4.26. Generating a C++ class that is in a subdirectory generates the #include "Subdirectory/Class.h" instead of #include ...

Body Instance property changes made in construction scripts are not applied

UE - Simulation - Physics - Jul 17, 2020

7054614 was submitted to fix an issue with not being able to modify physics properties on instanced blueprints child components. This is related to [Link Removed]. This change causes BodyInstance t ...

Linker Instancing Context duplication results in OOM

UE - World Creation - Worldbuilding Tools - OFPA - Aug 16, 2024

In order to fix a major issue involving dissapearing actors during cook, we added instancing context duplication in 31925640. This actually undoes the optimization made from 26543720 Both reported ...

Crash when calling SetVector2DParameter on a Niagara Parameter Collection

UE - Niagara - Mar 10, 2022

Crash when calling SetVector2DParameter on a Niagara Parameter Collection. The value for the SetVector2DParameter may or may not have to be changed in order for the crash to occur.  Assertion faile ...

UE5 Main - Editor crashes when creating a Data Table

UE - Editor - Workflow Systems - Feb 14, 2022

Doesn't occur in UE5 Release or UE4.Can't attach logs/crash information I'm encountering an RHI crash within UE5 Main at the moment. This issue seems to be caused by a commit from last year that ...

Sequencer Playlist - Triggering a playlist will crash every other editor on a Multi-user session

UE - Virtual Production - Tools - Sequence Playlist - Nov 24, 2022

[Link Removed] ...

CharacterMovementComponent::ApplyRepulsionForce uses the BodyIndex incorrectly as a bone index

UE - Simulation - Physics - Oct 5, 2015

The code to extract the FBodyInstance from the overlapping component is incorrectly interpreting the Overlap.BodyIndex as a BoneIndex. This results in incorrect bodies getting the force applied, as ...