An imported file that resides within the project's folders gets a relative path. That path is not updated it you copy the uasset to another folder. That breaks the Reimporting functionality.

UE - Editor - Content Pipeline - Import and Export - Aug 28, 2024

An imported file that resides within the project's folders gets a relative path. That path is not updated it you copy the uasset to another folder, so from the location of the new asset's the relati ...

Does FSlateElementBatcher::AddCachedElements need to check if r.HDR.UI.CompositeMode is enabled?

UE - Editor - UI Systems - Aug 28, 2024

When a specific configuration of HDR cvars are set, PIE in a New Editor Window will not render the game world. Settings (For DefaultEngine.ini): ```[SystemSettings] r.AllowHDR=1 r.HDR.Display.Color ...

Material instance UI doesn't show correct parameter preview for logic in a material function

UE - Rendering - Architecture - Materials - Aug 27, 2024

The Material Instance UI doesn't show the correct parameter values when the logic is moved from the material graph into a material function used in that material graph. Example setup showing the wr ...

BlendListByEnum assumes that enum values are sequential

UE - Anim - Runtime - Anim Blueprints - Aug 26, 2024

FAnimNode_BlendListByEnum assumes that values within a custom enum type are sequential (ie. the index 0 = value 0, index 1 = value 1).  But this is not true of all custom enum types, for example: U ...

Lumen interior light leaking occurs with realistic sun Lux values (20k)

UE - Rendering - Graphics Features - Lumen - Aug 23, 2024

When a realistic sun Lux value of 20,000 for the sun directional light, interior light leaking is much more pronounced then when using the default directional light Lux value of 10 Lux. ...

A sampling result of DistanceFieldAOHistory is shifted to a wrong position.

UE - Rendering - Graphics Features - Aug 21, 2024

DistanceFieldAOHistory introduces ghosting at low scalability and low screen percentages. This can lead to AO artifacts and a ghosting effect from the character. This issue was also observed on //U ...

Ray traced shadow appears for translucent material after LOD change

UE - Rendering - Graphics Features - Ray Tracing - Aug 21, 2024

When ray-traced shadows are enabled, the shadow for a completely translucent mesh appears when the LOD changes based on distance. ...

Biquad Filter is incorrect when bandpass is 1.0

UE - Audio - Aug 20, 2024

The bandwidth on the biquad loepass filter is cutting frequencies well below 20kHz when the bandwidth is 1.0. Slack convo: [Link Removed] Visualization:[Image Removed] ...

Invalidation panels can retain stale hittest data when caching is disabled/enabled

UE - Editor - UI Systems - Slate - Aug 20, 2024

Changes to the hit test grid of an invalidation panel while caching is disabled won't be respected when caching is reenabled. This can cause interactive widgets such as buttons who were set to colla ...

GAS: Creating an UGameplayEffectUIData blueprint will lead to a failed Data Validation

UE - Gameplay - Gameplay Ability System - Aug 16, 2024

The logic for data validation on UGameplayEffectComponent expects it to be owned by a UGameplayEffect. Any Blueprint derived from UGameplayEffectUIData (child of UGameplayEffectComponent) fails this ...