Phones with no magnetometer -> GetInputMotionState returns all 0s

UE - Platform - Mobile - May 23, 2018

Bug submission from a user overseas: " On some devices (Moto G5 Plus, Moto G5 S Plus) the values are always 0 like : Tilt : 0.00.00.0 RotationRate : 0.00.00.0 Gravity : 0.00.00.0 Accleration : 0.00 ...

Orthographic Camera View does not work properly in HTML5

UE - Platform - Mobile - Mar 2, 2015

A user has not been able to get his game to run in an orthographic camera angle. It works perfectly fine in perspective, but pushes the game off to the side once in orthographic. Users Tutorial of ...

Awakening an actor and calling TearOff in the same frame discards the awaken request

UE - Networking - Mar 15, 2019

When a dormant actor gets reawakened and we call TearOff on it, we could expect the actor to get replicated before being TornOff. When these two changes are done on the same frame, the TearOff nega ...

Ensure condition failed when destroying a Level Sequence Actor on tick

UE - Anim - Sequencer - Oct 18, 2019

In Tick processing of LevelSequencActors of World Tick, If you destroy an actor with an actor's ticks, delete it immediately from the LevelSequencActor array. I think that the problem occurred becau ...

Screen Aligned(Velocity) particles deform at low velocity

UE - Niagara - Nov 22, 2019

Screen aligned particles with very low velocity will squash in 4.23+ (No squashing in 4.22) Confirmed in 4.25 MAIN at CL 10333042 ...

Material and Animation do not stop even if Game pauses when Material domain is User Interface

UE - Editor - UI Systems - Jan 22, 2020

For Animation and Tick, we have confirmed that pausing can be done by stopping Native Tick. But we can't stop with Material. Widget Component can change the handling of time with EWidgetTimingPolicy ...

Attach track in the Audio track of Level Sequence becomes Unresolved Binding when the Editor is restarted.

UE - Anim - Sequencer - Jan 22, 2021

It looks like the Actor's Binding information has not been saved successfully. ...

GPU Debug Label is not set on some textures

UE - Graphics Features - Aug 11, 2021

texture streaming is one of the reasons that drop the label but not the only reason. add a line of code RHIBindDebugLabelName(NewTexture, *OldTexture->GetName().ToString()); into FMetalDynamicRHI:: ...

Duplicating skeletal mesh assets with groom in world outliner changes Hair UV layout

UE - Rendering Architecture - Materials - Dec 10, 2021

Having duplicate characters with groom, hair UV layout changes which results in visible shift in character look and also changes color based on camera distance and lights in the scene (hair would fl ...

iOS Quick Launch from the Editor no longer starts the app on device

UE - Platform - Apple - Feb 28, 2024

For some reason, iOS apps no longer launch on device when using QuickLaunch within the Editor.  Instead, it does install the app onto the device, but when it attempts to then launch the app, a messa ...