SetActorLabel() is slow on Landscapes

UE - Graphics Tools - Terrain - Landscape - Jan 7, 2025

I've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate all collisions. As per the repro, this can take a long tim ...

Add support for Debug Persistent Foreground Line Batcher

UE - Anim - Rigging - Control Rig - Jan 7, 2025

Foreground debug lines are cleared each frame and as a result, dissapear when PIE is paused (even if no persistence is supported, the lines sould be drawn if PIE is paused). We need support for pers ...

Collision profiles are reset when blueprint is loaded

UE - Gameplay - Jan 6, 2025

In UE 5.5 (and earlier versions), FCollisionResponse::operator== has incorrect behavior where it will detect that two collision response containers are identical if they have the same number of entr ...

A non moving looping camera sequence flickers.

UE - Anim - Sequencer - Dec 20, 2024

There is a small flicker on a looping single camera sequence where the camera doesn't move. Because the camera is static, you would not expect to see a flicker in lighting conditions. ...

Frame snapping does not work in AnimNotifyPanel

UE - Anim - Runtime - Dec 20, 2024

When snapping for frames is turned on, dragging an anim notify state does not result to being snapped on a frame. ...

BTDecorator_ForceSuccess does not work correctly on RunBehavior Node with Abort Decorators

UE - AI - BehaviorTree - Dec 20, 2024

When using the ForceSuccess decorator on a Run Behavior task which also has an abort decorator, the Force Success node cannot make the task return succeeded when the abort is triggered. This means t ...

Inconsistent events triggered by FlushProcessedKeys during keyboard hold input

UE - Gameplay - Input - Dec 20, 2024

Key repeats from the OS do not affect the EnhancedInput normally, but it causes inconsistent event triggers when FlushProcessedKeys is called with holding a keyboard key down. Removing references t ...

AssetLocalization does not work and the asset does not switch to localization asset even if culture is specified

UE - Editor - UI Systems - Localization - Dec 20, 2024

Asset localization does not work. When playing in standalone, it shows "jp" texture instead of "en" texture even if "-culture=en" is set. This appears to be a regression issue, as the localization w ...

Translucency Volume are not correctly shadowed in 5.5 without Virtual Shadow Maps and are not light correctly by some lights

UE - Graphics Features - Dec 20, 2024

TranslucencyVolume spheres are not correctly shadowed nor lit in Unreal 5.5 with VSMs disabled. Unreal 5.4 does correctly shade the sphere without VSMs. There appears to be differences in the outpu ...

World position offset (WPO) and nanite enabled causes shadow of complex static mesh actor to be deformed at a specific distance

UE - Graphics Features - Nanite - Dec 19, 2024

Context / Problem: Complex static mesh actors with nanite enabled and Evaluate World Position Offset (WPO) enabled works together except for a specific distance where the shadow is deformed and sort ...