GAS and single process PIE: modifiable static variables accessed by server and client

UE - Gameplay - Gameplay Ability System - Nov 16, 2022

See: UAbilitySystemGlobals::HandlePreLoadMap GAS features static variables that are modified by both server and client, thus result in issues in single process PIE where they access the same memory ...

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 ...

Forward Rendering causes Volumetric Material to not render against background

UE - Rendering - Nov 15, 2022

Regression: Tested in UE5/Release-5.0, and the issue is reproduceable. This issue appears to occur when the SkySphere is deleted from the level, as leaving the SkySphere in the level causes the Vol ...

Changing Shadow Quality causes SingleLayerWater Materials to disappear

UE - Rendering - Materials - Nov 15, 2022

Regression: Tested in UE5/Release-5.0, issue is reproduceable. This issue appears to be related to the Opacity Mask of the material, as not having an Opacity Mask does not cause the material to dis ...

"SetOwnerNoSee" setting does not work on Nanite meshes with SM6 enabled

UE - Rendering - Nanite - Nov 15, 2022

Licensee description of project: There is a pawn with 4 cubes attached, the 2 red on the left are "normal" static meshes, and the 2 green on the right are Nanite meshes. The 2 bottom cubes have "se ...

In a listen server, when a client moves, anim notifies don't get fired for the server/host.

UE - Anim - Gameplay - Nov 14, 2022

Reproduced 3/3 times. Was not able to reproduce in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. ...

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

UE - Gameplay - 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. ...