Shadows Replicated to Second Player while in Multiplayer PIE using Single Process

UE - Graphics Features - Jun 27, 2016

When running multiplayer PIE in the Third Person Example project, if player one is shadowed, the second player also becomes shadowed. This almost seems expected as it is being run as a single proce ...

OnRep_ReplicatedAnimMontage causes popping when montage ends

OLD - Anim - Oct 8, 2016

UAbilitySystemComponent::OnRep_ReplicatedAnimMontage doesn't handle some edge cases when stopping the montage when blending is involved. Namely, it's possible on a client (due to latency, etc.) that ...

Virtual joysticks is not properly working when running multiple clients in PIE

UE - Editor - UI Systems - Slate - Nov 21, 2017

When running multiple clients in PIE, It looks like first created viewport client handles every input event. I tried to narrow down the causes and found that it's because SlateApplication knows jus ...

When Client Side Navigation is enabled, it is only initialized Server Side

UE - AI - Jun 13, 2018

'Allow Client Side Navigation' no longer appears to register Client-side navigation in 4.20. In 4.19 the logic that was setup to check for it returns both Client and Sever Side navigation systems as ...

Delay Before Shot Warm Up introduces hitches

UE - Anim - Sequencer - Mar 29, 2019

setting a Delay Before Shot Warm Up can introduce hitches when rendering out a series of frames. ...

Scroll bar thickness is unaffected when set below 4

UE - Editor - UI Systems - Apr 9, 2019

Scroll bar thickness is unaffected when set below 4. There appears to be a minimum size in place that prevents the scroll bar from being set to a size lower than 4 ...

"Base Pass Shader" stat results are missing or display incorrect information while using Vulkan

UE - Rendering Architecture - Shaders - Nov 15, 2021

Base Pass Shader results are not showing, or showing up incorrectly when looking at the Stats results within the material editor of an Unreal Editor using Vulkan. Regression Tested: //UE4/Release-4 ...

PCG Graph callback fails after compiling blueprint

UE - World Creation - Procedural Tools - Jul 9, 2024

PCG graph callbacks in BP do not appear to get called correctly after the blueprint is compiled. ...

Output log spams errors if blueprint variable is right clicked

UE - Gameplay - Blueprint - Apr 16, 2015

Errors spam in output log when any variable is right clicked in the blueprint event graph. Update: This seems to occur only in character blueprints. Attempted in Actor BP with no success. ...

World Position Offset Only Affecting the Z-Axis when applied as a Material to a Landscape

UE - LD & Modeling - Terrain - Landscape - Jul 6, 2016

When utilizing World Position Offset on Landscapes, the VertexNormalWS only pushes vertices in the vertical direction. Even if you are to sculpt an aggressive slope on the landscape, the vertices ar ...