Trying to set a variable in one element of an array of custom UObjects will set that variable for all elements in the array.

If an array of custom UObjects is added to a class, changing the value of a UPROPERTY variable in one element of the array sets the same value in all elements of the array.

1. Create a new code project using the first person template.
2. Add a new Actor class to the Engine. Name it MyActor.
3. Add a new Object class to the Engine. Name it MyObject.
4. Open the project in Visual Studio and close the Editor.
5. In the header file for the new object class, include the following UCLASS specifiers: UCLASS(Blueprintable, BlueprintType, DefaultToInstanced, EditInlineNew)
6. Add the following code to the header file of the new object class:

   public:
   	UPROPERTY(EditAnywhere, BlueprintReadWrite, meta = (ExposeOnSpawn))
   	float SomeValue;
   

7. In the header file for the new actor, add the following code:

   public:
   	UPROPERTY(EditAnywhere, BlueprintReadWrite, Instanced)
   	TArray<TSubclassOf<UMyObject>> MyClassesArray;
   

8. Add an include for MyObject.h in the new actor header file.
9. Build the project in Visual Studio.
10. Open the project in the Editor.
11. Create a new Blueprint derived from MyActor.
12. Place an instance of the new Blueprint into the level.
13. In the Details panel of the new Blueprint, find the My Classes Array and add three elements to it.
14. Set each of the three elements to MyObject.
15. Expand the elements until you see the Some Value variable for each one.
16. Select the Some Value variable for one of the elements and enter a new value.

RESULT:
The same value is placed into the Some Value variable for each element in the array.

EXPECTED:
The only value that is changed is the one that was selected.

"Session Disconnected" UEFN

How to delete some elements correctly when deleting an array loop?

How does TextureRenderTarget2D get TArray<uint8> type data?

Why does the REMOVE method of map container remove elements have memory leaks?

Do I need to call Destory method to remove components from Actor when Destory method to remove Actor?

What is the cause of the packaging error falling back to 'GameUserSettings' in ue5?

What is the difference between Camera and CineCamera?

How do I set a material as a post-processing material?

UMG RichText not appear image when packaged

In UE5.4, custom variables in the level blueprint cannot be set to default values, and the eyedropper tool is also unavailable, whereas in UE4.27, these features work normally.