Unreal Engine Issues

Offset Root Bone Node needs reconstruction from velocities

The experimental Offset Root Bone node does not respect velocities, meaning that it does not work when a character is based on a moving platform. The capsule will rotate with the platform, but the r ...

[Level Instances] Editor Actor Folders does a full refresh after any LI is loaded, leading to wasted time when bulk loading LIs for a given WP region load

From Licensee: We discovered a pretty big performance hit in editor when loading level instances for a world partition map, specifically: EditorActorFolders.cpp:FActorFolders::OnAllLevelsChanged() ...

[AI] Crash when gathering heightfield geometry on worker thread

From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...

[AI] Spatially loaded objects in a WP map that are unloaded do not contribute to the navmesh when Build Paths is run

Using Build Paths does not create a navmesh that also includes any Actors or Objects that are unloaded and spatially loaded. The navigation system appears to load the world within the navigable boun ...

Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location

Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location. When that flag is true, the moment the GeometryCollection (GC) ...

Editor mode keyboard shortcuts active when in Play In Editor

Editor mode keyboard shortcuts active when in Play In Editor. This behavior is a departure from previous versions. It was described by the licensee as confusing and it clashes with gameplay assigne ...

Crash when using CastChecked<>(nullptr, ECastCheckedType::NullAllowed) in configurations where checks are disabled

When using CastChecked<>(), the second parameter can be passed as ECastCheckedType::NullAllowed to make the check succeed when the input is nullptr. However, in UE 5.5 up to the latest engine versio ...

Sequencer auto-generated thumbnails should not replace manually-catpured thumbnails.

bIgnoreAllPressedKeysUntilReleaseOnRebuild in Enhanced Input behaves unexpectedly during pawn possession

This is a speculative bug report from the user.  The fix for this is to re-do the work of 31224705 but in a better way. The "bShouldBeIgnored" flag is being overriden by the previous mapping's va ...

Certain Projects crashes on Start AR on iOS

Repro rate 5/5 Project crashes on pressing "Start AR" in ARDebugCheck, on "Begin Scan" in Handheld AR Template and on "Start AR" in ARImageDetection. Issue also occurs on ARVideoSettings and ARSave ...