Unreal Engine Issues

Assets referenced solely in disabled Niagara Emitters are still cooked and packaged

Niagara Emitters, when disabled, appear to be removed from the Niagara System's packaged asset as evidenced by a sizeable reduction in size. However, if the Emitter referenced an asset, such as a st ...

MVVM: Bindings set to Tick aren't executed every frame

IsMainWorldOnly does not work with standalone level instances

An actor in a standalone level instance will still be loaded in the main WP level regardless of having IsMainWorldOnly enabled. ...

Running blueprint "GoTo Definition" opens a new VS solution and displays the results, even if the project is launched from VS

Data Asset Instances created from Blueprints and are not selectable in asset pickers until their parent Blueprint is loaded. They are also not displayed correctly in the Content Browser

Consider a C++/BP class containing an EditAnywhere/InstanceEditable variable with type (UDataAsset*), (UPrimaryDataAsset*), or any of their subclasses. When setting this variable using a Property Ed ...

Message to rebuild lights does not display after static mesh position has changed

In a static lighting environment, moving static objects no longer marks the built lighting as invalid. This prevents the on-screen warning from appearing. Regression introduced in CL: 25964466 on / ...

Improve extra state debug box when net debug drawing

With net debug drawing enabled, an extra debug box is drawn around some actors to indicate if the actor is always relevant or if it is distance culled. However, the strange size of this box makes ne ...

Material Layering sometimes increses Shader complexity significently

In some situations, a Blueprint can become devoid of an Event Graph. While no graphs are present, multiple variables can be created with the same name.

In some situations, a Blueprint can become devoid of an Event Graph, or be created without one from the start. For example, function "FKismetEditorUtilities::CreateBlueprint()" in UE 5.4 does not ca ...

Niagara Fluids Plugin creates a memory reference of any saved level by only being active, before being actually used.

While Niagara Fluids Plugin is active it creates a memory reference of any saved level regardless of being actually used. Simply enabling the plugin shows a memory reference while deleting the level ...