Google VR - Pixel Density broken

UE - Platform - XR - May 23, 2019

PixelDensity not changing with Google VR Did not repro on Oculus Go Confirmed in MAIN 4.23 @ CL 6395234 ...

Sky light Cubemap doesn't work on Android device.

UE - Graphics Features - Nov 8, 2019

Sky light Cubemap doesn't work on Android device. But preview is OK. ...

FUniqueNetIdRepl::NetSerialize() crashes when embedded in a TArray() of structs.

UE - Networking - Jun 29, 2020

Calling the NetSerialize() function of FUniqueNetIdRepl from a custom NetSerialize() causes a crash. This only seems to occur when the struct is part of an array RPC parameter. ...

Crash occur when switching the Ray Tracing shadow function when only shadow is enabled in the Ray Tracing

UE - Graphics Features - Lumen - Sep 16, 2020

According to the licensee, this problem is caused by a variable inconsistency in Cvar. The cause seems to be the difference between the CVar reference when generating RayTracingSceneRHI and the CVa ...

ios threads freeze for almost one second when notifications pop up

UE - Platform - Apple - Mar 18, 2021

see the UDN .Setting bOtherAudioPlayingNow to always false can workaround the problem, but it's better to have a more robust solution. ...

Cross does not respond or crashes when "collide with attached children" is enabled

UE - Simulation - Physics - Apr 13, 2021

Fatal error! Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000 0x00007ffb09d32bb9 UE4Editor-Engine.dll!USkeletalMeshComponent::CopyClothCollisionsToChildren() [D:\ ...

The SetEmitterEnable BP function needs implementation

UE - Niagara - Mar 2, 2020

The BP function calls FNiagaraSystemInstance::SetEmitterEnable, which sets ExecutionState on the emitter instance to ENiagaraExecutionState::Inactive. FNiagaraSystemSimulation::PrepareForSystemSimul ...

Re-import Groom asset not working in UE5-Preview2

UE - Editor - Content Pipeline - Datasmith - Mar 16, 2022

When "re-import" or "re-import with new file" a groom asset in UE5 Preview2, the groom failed to update with the new data/file, still ...

Foliage is placed on LevelInstanceActor does not follow basecomponent when the LevelInstanceActor moves

UE - World Creation - Worldbuilding Tools - Foliage - Jun 24, 2022

Foliage usually follows when the Transform of the placed ground or floor changes. However, if the ground or floor is a Level Instance Actor, it will not follow. The cause is in the code below. voi ...

Blueprint editor can crash on removing one of a Sequence node's exec pins

UE - Gameplay - Blueprint Editor - Dec 22, 2023

User reported that upon removing a pin from a Sequence node the editor crashed. This only happened once, so may be a multithreading race condition or there may be additional unknown factors. The cra ...