Unreal Engine Issues

Crash after 'Reparent Blueprint' when renaming component on-top of orphaned inherited component

After reparenting a blueprint and inherited components from the previous parent are removed, trying to give a new component the same name as a previous component causes a crash inside UObject::Renam ...

Crash when adding a spawnable volume to a Level Sequence when Draw Brush Polys is enabled in the level editor

Nanite static mesh components are not individually highlighted when selected

Non-nanite static mesh components still show an individual highlight outline which individually selected even with other non-nanite static mesh components in the same actor. This is different when t ...

USplineComponent still editable in viewport despite setting as "read-only".

A spline component continues to be visible and editable in-editor despite all attempts to disable the functionality through the component's settings or uproperty specifiers. ...

GameplayTagQuery in editor can fail to update to new values or reset after being cancelled

When editing a GameplayTagQuery inside of the editor, there are times when the query editor will not update the query when selecting Ok or fail to return the query to its original state before editi ...

Ray Traced Shadows ignore mesh occlusion on water when enabled

A forum user reported an issue where object geometry occlusion would be missing when Ray Traced shadows were enabled. I was able to reproduce the issue internally where occlusion seems to be missing ...

Masked TwoSided material causing lumen direct lighting to leak through walls

It appears that LumenScene's Hardware Ray Tracing is causing light leaking into a sealed room (which should be perfectly black). This bug does not appear to happen on AMD GPUs. ...

City Sample vehicle does not always produce an EndOverlap Event

Reported on UDN: Something in the setup of the City Sample vehicles means that if a vehicle starts inside a  Box Collider Component then it won't generate an EndOverlap when exiting. Vehicles in ge ...

Creating MaterialInstanceDynamic for a moving/crumbled geometry collection component, the rendering position is reset to the initial location

Creating a MID makes the render state dirty and the engine will recreate a new scene proxy without the current attitude. This results in rendering the object in incorrect location. Here is a tempor ...

Landscape is missing its material when running a packaged project on Linux arm 64

From licensee: The project contains a small flat terrain with a basic material attached to it - just a single texture sampler connected to the base color output. Also in the project is a skeletal m ...