Crash accessing USplineComponent from Niagara while it is being updated on game thread

Rendering - Niagara - Aug 13, 2020

I was working with a licensee on something unrelated, and ran into this niagara threading crash. It looks like UNiagaraDataInterfaceSpline::SampleSplinePositionByUnitDistance on one of the niagara h ...

Static lighting isn't bouncing when using Layered Materials

Rendering - Ray Tracing - Aug 13, 2020

Static lighting will not bounce on the ceiling when using a Layered Material. The Material Attributes Layers node is used which doesn't appear in 4.24.3 so this isn't a regression. This was report ...

Adding NotifyTrack from AnimDataModifier doesn't refresh Animation Editor

Anim - Aug 12, 2020

When creating a Notify Track using an Animation Modifier in the Animation tab of an Animation Sequence, the new Track added and applied fails to appear in the Notifies panel until the panel has been ...

Camera grain fails to render on mobile previews and on devices.

Platform - Mobile - Aug 11, 2020

This was said to have been working in 4.24 Unsure currently when regression was If you use SM5 preview and play in mobile preview, it works as intended. ...

App crashes when executing 'Export to Disk' node on Android

Platform - Mobile - Aug 11, 2020

Regression is unconfirmed ...

Text3d renders backwards.

Rendering - RHI - Aug 10, 2020

When adding a Text3D actor (after placed as Child Component), into viewport the actor renders backward and not as expected. I was able to reproduce this issue in 4.25.3, but did not have this issue ...

D3D device being lost ( DXGI_ERROR_DEVICE_REMOVED ) on both D3D11 and D3D12

Rendering - RHI - Aug 10, 2020

It is hard to reproduce, but a licensee reported in UDN that it crashed on his computer frequently. He provided two crash dumps with logs which I uploaded here.435072-crash-425-dx12-432pm.zip[Image ...

Compsure crashes when reordering transform passes

Rendering - Aug 10, 2020

Re-ording the Transformpass array results in a crash of the engine. Link to repro video: [Link Removed] ...

Widget Slider increments in an odd way when it is dragged outside of its bounds when next to another Widget

Tools - UMG - Aug 6, 2020

The attached video shows the results of this bug. When two Widgets are next to each other and one of them has sliders, when the sliders are dragged past their bounds they will increment backward so ...

Groom Assets do not render fog

Rendering - Features Teams - Aug 4, 2020

Grooms are not rending correctly when volume fog is in a scene. ...