Attaching scene component with "SnapToTarget" overrides relative transform on client

UE - Networking - Dec 15, 2020

If received in the same update on a client, a replicated attach with attachment rule "SnapToTarget" will overwrite any replicated changes to the relative transform. Additionally, once a scene compon ...

Orient and Scale Retargeting Does Not Work with Skeleton Remapping

UE - Anim - Rigging - Retargeting - Aug 31, 2022

From UDN: "In FBoneContainer::GetRetargetSourceCachedData, the source bones are assumed to relate to the same skeleton as the bone container, which is not the case when using a skeleton remapping t ...

Constraint Binding ID is broken on attach track when subsequence asset is moved.

UE - Anim - Sequencer - Jan 14, 2026

Moving a level sequence asset that contains actors that are being referenced as a subsequence in an attach track causes the references to drop, even though the subsequence reference is correctly upd ...

App crashes when Launching on or launching packaged project on tvOS or iOS

UE - Platform - Mobile - Aug 1, 2016

Launch on to tvOS crashes the app on the device and returns the user to the main screen. This also affects packaged projects Update Project packaged in shipping configuration launched successfully ...

Editor primitives render incorrectly in stereoscopic with instanced stereo

UE - Platform - XR - Aug 17, 2016

Trigger box icons move around when oculus head movement is used. Found in //UE4/Release-Staging-4.13 @ 3090357 QA-Promotion map Edit: 08-22: This affects volumes as well as their editor icons, upd ...

[Feature Request] Morph Targets not included when exporting Skeletal Mesh from Engine

Tools - Apr 27, 2016

Comment from David H.: Update on this Jira. I got customers in Cinema field in needs of this feature. Morph Targets not included when exporting Skeletal Mesh from Engine. A use case for this wou ...

Vive - Motion Controller Component - Temporal AA Regression

UE - Platform - XR - May 22, 2019

In 4.22, temporal AA rendering artifacts can be seen on MotionControllerComponent attachments. Other AA methods look to be working without artifacts. Not seen with Oculus Workaround: Set "Disa ...

PHAT Mass Properties don't account for COM offset and Physical Material changes

UE - Simulation - Physics - Oct 17, 2019

Changes in an applied physical material are not automatically picked up by the PHAT mass properties display. A manual refresh is required for the display to update to the correct values. Adjustin ...

Navmesh rebuild always occurs on Startup map immediately after starting editor

UE - AI - Navigation - Nov 22, 2022

Whenever launching the UE5 Editor, it rebuilds the navmesh on the first map it opens. Reopening the same map again will not cause the navmesh to be rebuilt. It seems that the first time the map is o ...

Reference to material collection by Index instead of by Name causes inconsistency

UE - Rendering - Architecture - Materials - Feb 21, 2024

A UDN user reports materials referincing parameter collections by index instead of by name. The problem manifests itself when rearranging the order of parameters belonging to collections, as the edi ...