Unreal Engine Issues

Remove IFAs when they no longer have any instances

Package Map warnings when spawning primary asset class on server after seamless travel

This issue seems to occur due to the client keeping the NetGUID for the class/object, while the server will clean up this NetGUID during travel. When the client sends the class and its NetGUID as pa ...

World Partition: warnings on editor only actors when running the editor in -server/-game mode

The warning for editor-only actors is unnecessary in these modes where they don't exist. ...

AR Kit Env Probes are backwards

[Link Removed] Original issue shared on UDN: [Link Removed] ...

Add error message when unable to delete external actor file on disk

BP hierarchy change triggers incorrect map actor load warning: AttachTo: '{0}' is not static {1}, cannot attach '{2}' which is static to it.

When a blueprint's component hierarchy is changed by changing a child component's mobility value to Static while deleting its parent component which has Movable mobility, levels saved with an outdat ...

ENiagaraCoordinateSpace is not exposed to Python, meaning the FXConverterUtilitiesLibrary create_script_input_enum function does not work when setting that parameter.

The user was having issues with setting the correct ENiagaraCoordinateSpace enum in their python script. This enum currently exists in the engine as both a user-defined enum (which is deprecated), a ...

IME does not work in EditableTextBox in WidgetComponent

WidgetComponent controls widgets through VirtualWindow, but VirtualWindow does not have HWND, so IME cannot be enabled. The following workaround enables IME activation. void FSlateEditableTextLay ...

Editor Crash when changing Default Properties of a TArray of UStucts containing an InlineEditConditionToggle property in Blueprint Parent Class

This bug causes an editor crash. This crash occurs when changing the default values of a UStructs properties that are used as EditConditions, when they are set to InlineEditConditionToggle within a ...

Improved handling of material functions for Virtual Texture usage validation in materials

To enable proper validation between virtual texturing and opacity masked materials, a user has to check a project-level setting in order to get the material to compile, otherwise, they will encounte ...