Visual Noise on Thin Translucent materials with a Directional Light

UE - Graphics Features - May 30, 2023

Regression in testing This occurs with hardware and software ray tracing, as well as moveable and static lights This occurs regardless of anti aliasing. This was tested with DX12 ...

Static, non-replicated actors have different role to dynamically spawned actors

UE - Networking - May 23, 2023

For a non-replicated actor, the expected values for its local and remote roles would be ROLE_Authority and ROLE_None respectively. However, in ULevel::InitializeNetworkActors, ExchangeNetRoles(true) ...

Merge Actors Tool Simplifies Nanite Meshes

UE - World Creation - Worldbuilding Tools - Merge Actor - May 19, 2023

Tried every combination of LOD Selection Type, Nanite enanbled/disabled, the only way it would seem to get the full number of triangles from the source mesh into the merged mesh is to disable Nanite ...

Variant Thumbnails are washed out

UE - Editor - Content Pipeline - Variants - May 11, 2023

I think somewhere in Thumbnail Generator::Generate Thumbnail FromTexture() is applying this washout. ...

Replicated subobjects list crashes with unreachable yet valid objects when UE_NET_SUBOBJECTLIST_WEAKPTR=0

UE - Networking - May 8, 2023

This seems to occur when the subobject is considered unreachable but is not yet pending kill/marked as garbage. In this case, IsValid returns true while FWeakObjectPtr::Get returns nullptr for the o ...

Widget defaults not updated when modified on a base widget class via the hierarchy

UE - Editor - UI Systems - UMG - May 3, 2023

A licensee has reported an inconsistency in how modified base widget class defaults are propagated to children. When modified via the UMG Designer Graph's Class Defaults, derived classes will be mar ...

Dropped encryption ack control message can result in connection failure

UE - Networking - Apr 28, 2023

When connecting a client using encryption, the server's NetConnection sends the encryption ack and then immediately enables encryption (UNetConnection::EnableEncryptionServer). In the case where the ...

iOS ReplayKit isn't working in UE5.1+

UE - Platform - Apple - Apr 21, 2023

In 4.27 & 5.0 when you press the in-app screen recorder button it would pop-up a msg about the user giving permission to allow the screen recording and then would start the recorder and save the mov ...

Editor becomes unresponsive/freezes when a Geometry Collection is destroyed by a Hit Event while simulating

UE - Simulation - Core - Apr 19, 2023

This is a regression. Tested in //UE5/Release-5.1 CL23901901 When a geometry collection is destroyed by an On Hit event the editor becomes unresponsive and never recovers. No crash is generated. ...

Lumen tile classification flicker

UE - Graphics Features - Lumen - Apr 19, 2023

While we suggest using screenpercentage at 25%, it is visible at higher percentages. Video showing the flickering:https://udn.unrealengine.com/s/contentdocument/0694z00000Qw4jPAAR ...