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 ...

Landscape Paint Layers will not scroll to the end when using mouse wheel

UE - LD & Modeling - Terrain - Landscape - Sep 28, 2020

In a normal detail panel, each element has its own SDetailSingleItemRow and are mostly uniformly sized with some exceptions of having a few bigger rows (i.e. asset pickers). However, these layers ar ...

HiResScreenshot has incorrect masking when screenshot resolution scale does not match the viewport.

UE - Rendering Architecture - RHI - Sep 6, 2021

After a bit of investigation, the way to fix this would be to modify MergeMaskIntoAlpha to pass in the actual resolution scale and the requested size, and only mask the overlapping pixels. Currently ...

Memory leak when using Blueprint Debugger while inspecting a return value

UE - Gameplay - Blueprint - Mar 11, 2022

Potential memory leak when using Blueprint Debugger to inspect a return value multiple times while playing. User also reported this would cause a crash, but I didn't try to max out ram usage to trig ...

Nanite displacement on landscapes not rendering on 5700XT

UE - Graphics Features - Nanite - Mar 27, 2024

This only happens on a 5700XT, tested this on the 7900XT and the issue did not occur  Initially reported on the Preview 1 forums: https://forums.unrealengine.com/t/unreal-engine-5-4-preview/1763516 ...

Arrays chosen through a Select node cannot be altered

UE - Gameplay - Blueprint - Jun 3, 2015

Arrays chosen through a Select node cannot be altered. Note - This is also reproducible using any of these nodes instead of using 'Add':Add UniqueSet Array ElemInsert ...

Selecting a text field that is displaying "Multiple Values" will rewrite all values for all selected entities to "Multiple Values"

Tools - Jun 14, 2015

Selecting a text field that is displaying "Multiple Values" will rewrite all values for all selected entities to "Multiple Values". Reproduced in 4.7.6, 4.8.0, and Main (//depot/UE4/Promotable-CL-2 ...

Deleting console key does not persist

UE - Foundation - Core - Oct 23, 2014

When I go to the Input section of the Project Settings and change the key that the console is mapped to, when I restart the editor, there are now 2 bindings to the console. The default ~ mapping as ...

Undo in Skeletal Mesh Editor causes model to disappear

UE - Gameplay - Nov 9, 2016

I can across this issue when I was Ad Hocing and wanted to pose a skeletal mesh in a certain way. I imported one into my project and moved a bone, then undo and it was gone. I wanted to check if it ...

Unable to change/edit elements of Blueprint instances of Actor Component set UObject arrays

UE - Gameplay - Components - Nov 20, 2016

When an array of custom UObjects is defined in an actor component class, blueprint instances of the component class cannot update the array elements. Array elements only update inside the blueprint ...