Ledge Movement Stuck (CheckLedgeDirection is always returning true)

UE - Gameplay - Nov 20, 2023

The issue appears to that CheckLedgeDirection almost always returns true, which returns the leftward side step. This is correct for the leftward direction, but is not valid for the rightward directi ...

FSkeletalMeshRenderData::Cache doesn't store and restore versions

UE - Anim - Rigging - Aug 18, 2022

A licensee was trying to extend the FSkelMeshSection, FSkelMeshRenderSection and USkeletalMesh serialisers with their licensee version number and found that the FSkeletalMeshRenderData::Cache functi ...

[AI] BTService_RunEQS has rare crash during OnQueryFinished

UE - AI - BehaviorTree - Nov 9, 2023

The crash log shows Error: Ensure condition failed: MyMemory->RequestID != INDEX_NONE [UE5\Engine\Source\Runtime\AIModule\Private\BehaviorTree\Services\BTService_RunEQS.cpp][Line: 93]. Other logs ha ...

Shadow doesn't update for a moving nanite mesh (fixed in 5.4)

UE - Graphics Features - Shadows - Mar 25, 2024

When a nanite mesh moves, the shadow does not. ...

Subobject Data Subsystem has CanPasteSubobjects decorated with UFUNCTION but PasteSubobjects is not.

UE - Gameplay - Mar 25, 2024

In the Subobject Data Subsystem, CanPasteSubobjects is BlueprintCallable, but the call to PasteSubobjects is not. Given CanCopySubobjects and CopySubobjects are both BlueprintCallable, the ability t ...

[Datasmith] Geometry in specific wire file is not tessellated

UE - Editor - Content Pipeline - CAD - Feb 19, 2024

Launching iOS build from Xcode fails after initial install

UE - Platform - Apple - Feb 21, 2024

Xcode has an issue with repeated launches onto an iOS device.  After the initial install, Xcode is unable to install any other builds of that same app due to some sort of codesigning issue.  A work ...

GPU particles disabled on Quest

UE - Niagara - Feb 9, 2024

GPU particles were disabled on Quest 1 due to a compute issue. We need to validate / fix issues for Quest 2 / Quest 3. Reported in [Link Removed] ...

Media Player can't continue to play after the progress bar is dragged.

Media Framework - Nov 15, 2023

This bug occurs in 5.3 version. It's ok in 5.2 version. ...

Foliage 'BlockAll' instanced static meshes do not affect NavMesh

UE - AI - Navigation - Feb 27, 2024

When placing static mesh foliage and setting the foliage mesh's Collision Preset to Block All,  the placed meshes do not consistently block parts of the nav mesh. Expected: Placed meshes (for examp ...