Unreal Engine Issues

Blueprint nativization fails using a map type argument as Expose on Spawn

Here's a sample blueprint [Image Removed] The lack of implementation FCustomThunkTemplates::SetMapPropertyByName causes this error.#include "Kismet/BlueprintMapLibrary.h"// The fix needs this head ...

Editor crash when trying to launch on an Android target device from a Mac native platform

The one time it did not instantly crash after pressing the Launch button, I had to Kill -9 <PID> UE4Editor because it was using 129% of my CPU for 50 minutes. ...

Renaming Native Blueprint Interface category in Blueprint derived class causes crash

Renaming a function category from a Interface class which a class inherits from causes crash. ...

Blueprint component lost when reparenting native base class and component name collides

Use attached project to skip c++ steps. Follow from step 6. Update: It appears that the same symptoms occur if you simply change the name of an existing subobject, without changing the property/f ...

Nativizing a blueprint interface using TMap/TSet causes Fatal error in UHT

FPropertyBase constructor does not handle a TMap/TSet property. Following workaround can avoid this error. explicit FPropertyBase(FProperty* Property) : PropertyExportFlags(PROPEXPORT_Public) ...

Functions containing Unicode characters break nativization on Clang-hosted target platforms.

The UHT boilerplate code that's generated from a converted Blueprint class header file generated from a Blueprint class containing one or more function names with non-ASCII characters will fail to c ...

Redirecting a BP enum to a native type enum causes the old name to be "none"

BP editor - Unable to edit details of a native component named as 'RootComponent' in C++ code.

Looks like maybe the PropertyView stuff doesn't like it when the subobject name matches the parent's object property name? In this case the CDO is the object that will be selected to the PropertyVie ...

Make/Break Struct node breaks for native structs after modifying the structure in a hot reload

Changing and compiling a custom struct in C++ will break behavior of Make/Break Struct nodes in blueprints if the blueprint is saved after the compile. Regression: No - blueprint fails to save afte ...

Hotreload on c++ native actor component class will cause BP edit malfunctioned

[Image Removed] When the BP editor is opened, hot-reload compile will wrongly serialize a HORRELOAD_XXX object into the BP class and package which can not be found when Editor is opened again after ...