Editor meta overwrites meta values set inside _init()

[KoBeWi]

Godot version: 3.2

Issue description: When you try to set a value in a node inside it's _init() call, it will be immediately overwritten with editor-specific values, like __edit_lock. I mean the meta dictionary is replaced, so your values are lost.

Instance.tscn

func _init() -> void:
    set_meta("test_meta", true)
    print(has_meta("test_meta")) #true

Main scene

func _ready() -> void:
    var instance = load("res://Instance.tscn").instance()
    print(">> ", instance.has_meta("test_meta")) #should be true, but it's false if the Instance.tscn is locked in the editor

I know this might be working correctly, but IMO the meta you set and the meta set by the engine should get merged instead of replacing one another.

Minimal reproduction project: ReproductionProject.zip

[filsd]

I can confirm the issue here. Its happening in my current project: I'm using "meta" just to check the type of object and thought of putting it on _init() was a good choice since I needed to know the "obj type" as soon as possible.

[KoBeWi]

Fixed, likely after metadata rework.