Unreal Engine Issues

Blueprint actors can not be casted until they have been opened after migration or being upgraded to a more recent engine version

This is not a regression tested in //UE5/Release-5.0 CL20979098 After migrating an asset from an older engine version or upgrading a project to newer version Blueprints carried over can not be cast ...

When transferring data from CPU to GPU particles using Array, if CollisionQuery is used simultaneously, the Array cannot be read correctly.

Per instance custom data and Material Layers issue

Blueprint Typing Potentially Incorrect when using Chooser Plugin

This appears to be some form of type confusion. In editor, the type of the result pin is a Packed Level Actor Class Reference, but at runtime, the returned value is a BlueprintGeneratedClass. ...

Browsing to a "Packaged Level Actor" does not take to the PackagedLevelActor inside the Content Browser.

There is a bug inside Unreal Editor when selecting "Browse to Asset" for a Packed Level Actor. Right clicking the Packed Level Actor, all the asset options appear. If you click the "Browse to Asse ...

Niagara mesh particles invalidate lighting when "Cast Shadow" is enabled with Hardware Ray Tracing enabled

Lumen HWRT, combined with Niagara Mesh Renderer, can cause the Lumen Scene to be reset, resulting in a sudden change to indirect lighting. ...

Inconsistent Details Panel Focus Behavior On Enter Pressed for Blueprint-Added Components

When editing a component property in the level viewport, if the component was added via the Blueprint Editor, pressing Enter after changing a value causes the details panel to lose focus. This inter ...

5.6 Skeletal Meshes with Disabled Sections Flicker in Ray Tracing Scene

Skeletal meshes with disabled mesh sections will flicker in the Hardware Ray Tracing Scene. Also tested on //UE/Release-5.6, CL:45232827 ...

Drag and Drop fails in Standalone and Packaged builds when WidgetComponent’s Widget is set at runtime

When a UWidgetComponent has its widget assigned dynamically at runtime using CreateWidget and SetWidget, drag & drop operations fail in Standalone Game and packaged/game builds, while working correc ...

Input Touch Hold trigger fails to reset, unlike Mouse Hold (using Enhanced Input Context)

When using the Enhanced Input Context, the Input Touch Hold trigger does not reset correctly after releasing a touch input. Unlike Mouse Hold, which keeps firing Canceled events as expected, Input T ...