Cursor Overlap events don't work on characters

UE - Gameplay - Sep 4, 2015

Setting up mouse over events for a character do not trigger. ...

Editing a blueprint from a hidden streamed level can reset all actor transforms

UE - Gameplay - Blueprint - Jul 9, 2015

When editing an actor blueprint that's inside of a hidden streamed level, the blueprint actor transform will reset to 0,0,0. There is a video that's attached to the AnswerHub post which is very use ...

FOV only Camera anim is not working as intended.

UE - Gameplay - Feb 6, 2018

FOV-track-only camera anim do not give effect to current camera. if the anim have transform track without any key, the anim works. Regression? yes. This is not reproduced in 4.13.2 launcher version ...

Blueprint Structure breaks when the Editor is closed and re-opened if the struct contains variables that are a Class Reference and a Soft Object Reference to a Blueprint

UE - Gameplay - Blueprint - Nov 8, 2018

A struct containing variables that are a Class Reference and Soft Object Reference to a Blueprint no longer works after the project is closed and re-opened in the Editor. If a variable of the struct ...

ISM + WPO = broken motion vectors?

UE - Graphics Features - Nov 5, 2024

Instanced Static Meshes will have incorrect velocity if a Material uses World Position Offset. Fixed WPO in a material causes significant velocity on the ISM. This was also replicated in //UE5/Rele ...

ForEachLoop does not save structure changes in the loop body

UE - Gameplay - Blueprint - Feb 2, 2015

If a ForEachLoop node is used to cycle through an Array of Structures, using the Array Element output of the Loop node to set the members of the structure does not save the changed values. Workarou ...

Camera jitter when using Crane Rig with Look At

UE - Anim - Sequencer - Jul 21, 2016

Camera jitter when using Crane Rig with a Cine Camera that is using the Look At Functionality ...

empty default value for a blueprint member variable in a custom k2node

UE - Framework - Blueprint - Feb 9, 2024

User is attempting to find a blueprint member variable's default value in their implementation of UK2Node::NotifyPinConnectionListChanged(). but the expected value in FBPVariableDescription is empty ...

Mass entities initializing fragments on the incorrect archetypes due to shared CreationContext

UE - AI - Mass - Feb 3, 2026

UMassAgentSubsystem::HandlePendingInitialization creates a single FEntityCreationContext that is reused across all iterations of the PendingAgentEntities loop. When SpawnEntities eventually calls in ...

Adding new elements to an array in code does not update in a class based blueprint on compile

UE - Gameplay - Blueprint - May 5, 2015

When adding elements to an array inside a code class, blueprint instances of the class do not have their array updated after a hot reload. ...