Ray traced shadow sample settings greater than 1 cause shadow artifacts

UE - Graphics Features - Lumen - Sep 23, 2020

Alternative you can follow these steps to reproduce 1. Create a new project with ray tracing enabled 2. Activate the groom plugins 3. Import a groom asset into the scene 4. Add any light type to the ...

Blueprint Editor Show Grid does not toggle the grid in the viewport

UE - Editor - Workflow Systems - Oct 28, 2020

The grid in the blueprint editor is not able to be hidden via the Show Grid flag in the viewport dropdown. This has regressed sometime in //Ue4/Release-4.25 as I cannot reproduce this issue in //UE4 ...

Enabling Window Animations causes drop down menus to flicker and be displaced

UE - Editor - UI Systems - Slate - Mar 10, 2021

I tested this with 3 Nvidia Drivers to see if I could find a driver that works properly. I tested the following Game Ready drivers Version 457.30, 461.40 and the latest, 461.72. The flicker occurred ...

"PivotPainter_PerObjectData" node's "Random Value Per Element" output crashes with an assertion when used with a "Cross" node

UE - Rendering Architecture - Materials - Jan 31, 2022

This is a regression. Tested in: //UE4/Release-4.27 CL18319896 Binary //UE5/Release-5.0 CL18747223 GitHub When using the Random Value Per Element from a PivotPainter_PerObjectData with a Cross nod ...

Widget "Listen For Input Action" executes on unexpected input event

UE - Editor - UI Systems - Feb 19, 2020

Listen For Input Action firing erroneously. Confirmed in 4.26 MAIN @ CL 11536993 ...

Warnings displayed when launching the editor in DX12

UE - Graphics Features - Oct 6, 2016

Following warning is displayed in the log when launching in dx12:[2016.10.06-22.33.36:185][ 0]LogD3D12RHI:Warning: Root signature created where the root parameters take up 18 DWORDS. Using more tha ...

Particle disappears if it is using PSA_Velocity and setting custom time dilation 0

UE - Graphics Features - Dec 7, 2016

A licensee reported some of their particles disappear when setting the actor's custom time dilation 0. This seems to happen when a particle is using PSA_Velocity as Screen Alignment. This repros in ...

Keyboard shortcuts are not responding in Persona

OLD - Anim - Jan 12, 2017

Some keyboard shortcuts are not working in Persona. Seems like the anything that is inputted under Animation in the keyboard shortcuts are not working as expected. The only shortcut that seemed to ...

Transform does not update after first time for Instance Static mesh in Blueprint Editor

UE - Gameplay - Blueprint Editor - Mar 2, 2017

In 4.15 When you update the transform of an instance static mesh a second time the editor does not update the location, to get the update to display correctly you must close and re-open the blueprin ...

Sphere Trace incorrectly reports actor's location

UE - Simulation - Physics - Mar 15, 2017

When a sphere trace extends from an actor, if the sphere radius is large enough and/or the actor is close enough to one of the actors hit by the sphere, the reported hit location will be the same as ...