[MetaSounds] - If the audio output hits an extreme Gain value, the Audio Meter Widget stops responding

UE - Audio - MetaSounds - May 20, 2022

It's possible to have the Audio Meter widget stop responding if you set the Gain really high. It will cease to work as long as the MetaSound window is open. Closing and reopening the MetaSound windo ...

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 ...

MATERIAL_SHADINGMODEL_TOON macro is not propagated to the substrate tool BSDF material on a DDC hit

UE - Rendering - Features - Shading Models - Jul 27, 2026

On a DDC hit, the SubstrateMaterialBsdfFeatures variable restored into MaterialCompilationOutput is not copied into SubstrateTranslatorData.SubstrateMaterialBsdfFeatures, which is referenced by the ...

Inconsistent mobility when converting selected actors to a blueprint

UE - Gameplay - Blueprint - Jan 6, 2015

Noticed when replying to a user on the forums (link included) When using the "Convert to Class Blueprint" feature in the level editor to create a blueprint from the selected actors, the created blu ...

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 ...

Smoothing landscape removes landscape collision in smoothed areas

UE - LD & Modeling - Terrain - Landscape - Apr 27, 2016

Smoothing user's landscape breaks collision, causing player to fall through the ground at points that have been smoothed. Resampling landscape fixes the error until smooth tool is used again. Regr ...

Blueprint Functions with a Parameter Named "Category" Will Change the Functions Category Back to Default

UE - Gameplay - Nov 19, 2018

When creating a Blueprint Function under a non-default category, if you name one of its parameters "Category" the function will be moved back to the default category. This is working as expected in ...

Custom CrowdManagerClass reference is set to none when restarting the Editor

UE - AI - Nov 21, 2018

When setting a C++ class that's derived from CrowdManager as the "Crowd Manager Class", will cause the "Crowd Manager Class" value to be set to "None" when the Editor is restarted. This issue was r ...

Wacom Tap to Left Click Doesn't Work with Drop Down Menus

Tools - Nov 23, 2018

While using a Wacom tablet, if you tap to click on drop down menus they will not open up. The menu will appear for a moment then close immediately. Occasionally if you click away from the drop down ...

Setting KeepState as default in LevelSequences makes Sequencer blend animations not as expected

UE - Anim - Sequencer - Nov 27, 2018

Setting "Keep State" for an animation in sequencer makes the sequence behave differently in Sequencer and in Play Mode. The animations appear to be blending together instead of having normal transit ...