First Person Primitive

UE - Graphics Features - Feb 20, 2025

First Person Scale and First Person Field of View on camera components do not apply to the depth prepass when rendering First Person View meshes, leading to a mismatch between the depth pre-pass and ...

Planar Reflection seems to render inverted

UE - Platform - Mobile - Jul 6, 2016

Planar Reflections seem to be inverted on mobile devices. The angles seem to be off too. ...

[Quartz][Device Swap] - Quartz Clock Stops when swapping Audio Output Device

UE - Audio - Quartz - May 2, 2022

When swapping the audio output device while running PIE or a packaged game on Windows, Quartz clocks stop. Does not repro in Release-4.27, but can be reproed in Release-5.0. ...

Camera Shot Blend does not work when Reverse Play

UE - Anim - Sequencer - Feb 13, 2024

Camera shot blending on Sequencer does not work when Reverse Play. If we place two cameras in a scene and just blend them by Camera Shot track in sequencer, the view point is interpolated between th ...

Instance Static Mesh element not rendered if array element is removed and another is added

UE - Gameplay - Dec 5, 2017

Instance Static Mesh element is not rendered if array element is removed and another is added. The collision is still present and the instance count will still register as if the non-rendered elemen ...

Rotate about axis material node can cause Z-fighting in Niagara mesh particles

UE - Niagara - Oct 21, 2020

The rotate about axis material node appears to cause z-fighting in mesh particles if they are scaled in the simulation. ...

Toggling ULevelStreaming::bShouldBeVisible causes replication errors

UE - Networking - Mar 17, 2017

Looks like the replication system doesn't properly account for bShouldBeVisible. Once a level has be marked bShouldBeVisible=false on the server, the level is completely cleaned up and all actor cha ...

Component Array doesn't update properly when using Text Variables

Tools - Sep 19, 2018

A Component Array doesn't update properly when using Structure Variables. Any array elements added after the setup don't get printed when the event is called. If you set the "Editable when Inherited ...

[Audio Capture] - Editor crashes when activating an Audio Capture component when there are no active input or output devices avilable

UE - Audio - Aug 12, 2022

If a device has no available input or output devices, activating an Audio Capture component will cause the device to crash. Occurs in Editor and Runtime. Assertion failed: NumTotalFrames > 0 [File:E ...