StartPlayInEditorGameInstance doesn't consider bStartInSpectatorMode for client instances

UE - Networking - Nov 15, 2022

In UGameInstance::StartPlayInEditorGameInstance, the server instance will go through the normal process of creating the URL using BuildPlayWorldURL, which checks the FGameInstancePIEParameters' bSta ...

NetStartup actors may receive old, unreliable multicast RPCs when becoming relevant again with replication graph

UE - Networking - Nov 15, 2022

Unreliable multicast RPCs won't be processed for connections where the actor isn't relevant (this is checked in UNetDriver::ProcessRemoteFunction). However, UReplicationGraph::ProcessRemoteFunction ...

Adding Components via Editor Utility Widgets does not add component to Details panel

UE - Framework - Blueprint Editor - Nov 14, 2022

Using the Editor Utility Widget to add components to objects in UE does not appear to function as expected. I reproduced this 8/8 times in UE 5.1, 5.0, and 4.27, confirming that this is not a regres ...

Rigidbody world space simulation overwrites scaling of the skeletal mesh

UE - Simulation - Physics - Character - Nov 14, 2022

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Not a Regression. ...

If something is blocking the One File Per Actor file, you can delete the actor inside Unreal, but the file won't be deleted and will reappear after the map is reloaded.

UE - World Creation - Worldbuilding Tools - OFPA - Nov 14, 2022

Licensee:Artist reported removed actors reappearing I suspect that file got loaded by something and tested what going to happen if you open a file for read I used python to test lock_file = R'C ...

Investigate TSR for translucency with dithered opaque

UE - Graphics Features - Nov 8, 2022

[Link Removed] ...

[AI] Investigate checking if Owner is an AIController in EnvQueryTest_Pathfinding to get default NavQueryFilter

UE - AI - EQS - Nov 7, 2022

BTTask_MoveTo and EnvQueryTest_Pathfinding don't use the same pattern to obtain the NavigationFilter to be used if the filter is not set. The BTTask_MoveTo uses the controllers GetDefaultNavigationF ...

Nanite Meshes appear to glow with Skylight stationary mobility

UE - Graphics Features - Lumen - Oct 31, 2022

[Image Removed][Image Removed] ...

AO Decals not working when using Lumen

UE - Graphics Features - Oct 14, 2022

When lumen enabled, and with static lighting disabled, we expect the Material AO to contribute to diffuse lighting occlusion. However AO from decals does not have any effect. ...

NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects

UE - CoreTech - Oct 14, 2022

In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...