FBX export - BP StaticMesh Scales from Mesh Origin

Tools - Dec 13, 2018

Unexpected behaviour with meshes scaled via BP and exported via .fbx (.obj looks to function as expected) Confirmed in 4.22 Main CL 4648854 ...

Rounding errors are present in FJsonValue::TryGetNumber(int64&) and FMath::RoundHalfFromZero()

UE - Foundation - Core - Mar 8, 2019

A licensee reported a bug in rounding of a call to FJsonValue::TryGetNumber(int64&) with large values.  In investigating this, it appears that equivalent problems also exist in FMath:: rounding func ...

Input pins are displayed when "StaticSwitch" is used in "Dynamic Input Script" of Niagara

UE - Niagara - Jan 24, 2020

The pin is missing the checkbox or dropdown to set the switch value on the function call node. It should only look like the screenshot if the switch value is propagated to the next higher caller. ...

Android: FTraceAuxiliaryImpl::WriteToFile Fails to Create Absolute Path

UE - Platform - Mobile - Jun 23, 2021

A licensee has reported that the functions FTraceAuxiliaryImpl::WriteToFile, and find IFileManager::ConvertToAbsolutePathForExternalAppForWrite do not seem to be working properly for Android, as the ...

ARCore: Handheld AR Template doesn't handle background/resume correctly

UE - Platform - XR - Jul 23, 2021

When the new template gets backgrounded and resumed, the app might not be fully functional at resume time. Sometimes the plane detection doesn't work. Sometimes the camera goes down. It's not very ...

Make Enhanced Input More Extendable

UE - Gameplay - Input - Dec 8, 2022

Enhanced Input could use another pass to make sure classes, functions and data are properly exposed to both be safe and allow users to change/expand Enhanced Input. ...

Geometry Collection behavior does not change when changed by BP

UE - Simulation - Physics - Destruction - May 2, 2022

Reproduced 6/6 times. This seems to affect all "Set" functions for Geometry Collection Components, such as Setting Object Type from Static to Dynamic, or changing Collision Type. ...

Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE

UE - Rendering Architecture - Jul 11, 2024

When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...

Stationary Skylight intensity blown out

UE - Graphics Features - Nov 29, 2016

Using a Stationary Skylight appears to be blown out with the SLS Captured Scene. Movable and Static do not exhibit this behavior. Comparison gif attached and sample project attached. Tested with: ...

RHIGetAvailableResolutions returns duplicate entries when bIgnoreRefreshRate is false

UE - Rendering Architecture - RHI - Sep 17, 2015

When the RHIGetAvailableResolutions function fills the array that is passed in as the first argument, it will end up filling some slots with duplicate resolutions (including refresh rate) when the b ...