Mover plugin: Crash on UFloorQueryUtils::ComputeFloorDist() and other utility functions that assume the pawn uses a UCapsuleComponent

UE - Gameplay - Player Movement - Mover - Dec 4, 2025

The following functions have been found to perform unchecked casts of the pawn's "UpdatedComponent" to class UCapsuleComponent, possibly resulting in crashes:UFloorQueryUtils::ComputeFloorDist()UGro ...

Unreal Engine Fails to Launch with Vulkan SM6 RHI and RenderDoc Auto-Attach Enabled

UE - Rendering Architecture - RHI - Dec 3, 2025

When launching Unreal Engine with the Vulkan RHI, SM6 and RenderDoc Auto Attach on Startup enabled, the engine fails to initialize with the error: “A compatible Vulkan Driver is required to run the ...

PlayerCollision visualization incorrect on LandscapeSplineMesh when Nanite is enabled

UE - Graphics Features - Nanite - Dec 3, 2025

From licensee: I’ve found an issue with the visualization of PlayerCollisions when using LandscapeSplineMesh with a mesh that has Nanite enabled. The Chaos collisions shown in the Chaos Visual Debu ...

Standalone Level Instance with WorldPartition world don't load in editor

UE - World Creation - Worldbuilding Tools - Level Instances - Dec 2, 2025

A WorldPartition map used as a level instance that's set to standalone mode doesn't load its actors in the editor. ...

DoDeferredRender will not UpdateBound correctly when NavigationCachedBoundsUpdated

UE - AI - Navigation - Dec 2, 2025

With InstancedStaticMeshComponent, after calling AddInstance, an instance that’s far away gets culled because of additional logic that was added in 5.7 to This works correctly in 5.6 and the instanc ...

Material LocalPosition node does not work correctly with Nanite Skinned meshes

UE - Graphics Features - Dec 1, 2025

Nanite Skinned Meshes don't receive the correct Local Position in some shadow passes. This depends on the clipmap level, and is not related to VSM caching. Unreal Engine 5.6 shows the same issue, b ...

Memory leak in Landscape edit mode

UE - Graphics Tools - Terrain - Landscape - Nov 28, 2025

Initialization error when creating FEventReply objects from Python

UE - Editor - UI Systems - UMG - Nov 28, 2025

the handled value passed to unlock_mouse is actually treated as unhandled, because FEventReply has no uproperty and no Identical()function of its own. Adding WithIdenticalViaEquality can fix this is ...

SaveGeneratedTexture2DAsset can crash when overwriting an existing asset

UE - Texture - Nov 28, 2025

SaveGeneratedTexture2DAsset can crash for a variety of reasons when overwriting an existing texture asset. When no existing asset exists, the function simply moves the provided transient Texture ass ...

Translucent deferred decal materials look different when setting specular attribute directly or via constant node

UE - Rendering Architecture - Materials - Nov 28, 2025

Translucent deferred decal materials look different when setting their specular material attribute directly on the material node versus setting it via a constant node ...