Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled

UE - Niagara - Nov 14, 2024

In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...

Custom depth gets cleared for each eye in VR

UE - Platform - XR - Dec 19, 2020

From licensee: "Expected behavior (as seen in UE 4.25...also confirmed in 4.24):"[Image Removed] "Actual behavior in UE 4.26:"[Image Removed] Report from a licensee: In VR when using custom dep ...

DMX component in world partitioned level fails cook

UE - Virtual Production - IO - DMX - Feb 10, 2025

Since UE5.5, RegisterComponent has been called during cook process, So unnecessarily references from DMXLibrary to DMXComponent has been added.  There is a workaround to avoid adding references : ...

TraceHitInfo not returning correct PhysMat when Changed at Runtime via MID

UE - Simulation - Physics - Jan 11, 2016

Line Traces are not correctly returning the Physical Material Info when that information is changed at runtime via a Override Physical Material or a Set Physical Material via a Dynamic Material Inst ...

Nested components do not appear in proper order in viewport instances

UE - Gameplay - Blueprint - Nov 22, 2017

When an actor contains a nested component (components declared inside another component class), the hierarchy for the actor blueprint does not match the hierarchy of a placed instance of the actor ...

Instanced Properties remain after compile

UE - Gameplay - Blueprint Editor - Jan 25, 2018

Our team has been using property instances, and have run into several problems. We were able to reproduce one of the problems, and I was hoping to have your team look at it. General scenario. We ha ...

IOStore : Packaged game crashes when doing garbage collection right after cancelling async loading by UnloadPrimaryAssetList

UE - Foundation - Core - RuntimeLoader - Mar 15, 2021

Packaged game without IOStore never hits this error. ...

An Actor with Run Construction Script in Sequencer set to true doesn't render out correctly with Movie Scene Capture or Move Render Queue

UE - Anim - Sequencer - Mar 31, 2022

An Actor with Run Construction Script in Sequencer set to true doesn't render out correctly with Movie Scene Capture or Move Render Queue. While previewing the Sequencer the actor moves as expected. ...

TakeRecorder cannot record Auto Activate and Destroy of Niagara effect

UE - Niagara - Apr 1, 2024

When Niagara FX of a recording actor is spawned during taking a record, that FX behavior must be recorded and able to be playbacked. However, Niagara Component Auto Activation by BP node is not reco ...

When running in the Editor, actor owning a UCameraTestComponent that sets DesiredView.Rotation Pitch below -90 or over 90 will attach to the Editor Camera as if it was being piloted

UE - Gameplay - Gameplay Cameras - Feb 27, 2025

When running in the Editor, actor owning a UCameraTestComponent that sets DesiredView.Rotation Pitch below -90 or over 90 will attach to the Editor Camera as if it was being piloted. The licensee re ...