Blueprint functions with unconnected return nodes may return unexpected values

UE - Gameplay - Blueprint - Feb 11, 2022

We don't clearly define the behavior for a Blueprint function when an execution path without a return node is taken. We should either report an error, or have the function return the default initial ...

External event dispatcher bindings are duplicated along with instances in the level editor.

UE - Gameplay - Blueprint Editor - May 12, 2022

Event dispatchers (i.e. delegate property values) are currently copied to the new instance when users copy/paste/dupe actors. However, this means that if you have an instance whose dispatcher is dy ...

The Build Nanite property is disabled after reimporting a mesh that has Build Nanite enabled

UE - Editor - Content Pipeline - Import and Export - Jun 23, 2022

Regression no, the issue was reproduced in Windows //UE5/Release-5.0 CL 20280985 repro rate 3/3 After the user tries reimport mesh with nanite enabled from mesh editor the mesh was reimported with ...

USplineComponent::FindLocationClosestToWorldLocation does not function correctly with non-uniform scale

UE - Gameplay - Components - Jul 19, 2022

Licensee reports incorrect results with FindLocationClosestToWorldLocation when used with non-uniformly scaled spline components. ...

Struct Properties marked EditAnywhere and BlueprintReadOnly are exposed in Widget Blueprints

UE - Framework - Blueprint - Jul 21, 2022

Struct properties marked up with the EditAnywhere and BlueprintReadOnly specifiers are exposed in Widget Blueprints by MakeStruct nodes and split pins on Setter nodes. CanBeExposed in K2Node_MakeStr ...

Blueprint breakpoints on EventEndPlay do not break execution in PIE

UE - Gameplay - Blueprint Editor - Sep 16, 2022

Blueprint breakpoints on EventEndPlay do not break execution of the PIE session before the session is destroyed. ...

Installed builds of the Engine cannot package game targets with optional game features

UE - Foundation - Build - Rocket (Installed Engine) - Mar 10, 2022

The build system supports many types of flags that can be enabled in game-specific Target.cs files to enable things like logging in shipping, target-specific overrides like custom config, or enablin ...

FEnhancedActionKeyMapping struct has incorrect comparison results

UE - Gameplay - Input - Nov 11, 2022

The fix for this is to override the  FEnhancedActionKeyMapping::operator== to account for the deep copy that happens on modifiers instead of comparing addresses ...

Pasting an instanced subobject property into a Blueprint prevents that Blueprint from being added to level

UE - Framework - Blueprint Editor - Nov 17, 2022

Copying and pasting an array of nested instanced subobjects from a level instance into a Blueprint's defaults and adding that Blueprint to the level will prevent the actor instance from saving. ...

Reimporting static mesh doesn't respect changed lightmap settings

UE - Editor - Content Pipeline - Import and Export - May 11, 2023

Licensee reports change of behaviour between UE4 and UE5 when reimporting a mesh after changing its lightmap build settings. Change of behaviour occurred in 17404767, which was to fix a similar pro ...