C# [Export]-decorated property has two property paths

[odaimoko]

Godot Version

4.2.1.stable

Question

So here’s my C# property

  [Export] public float ViewportLimitLeft { get; set; } = -100000;

and here is the inspector

But when I run the game, another property seems show up

I try to change its value during runtime, only the Members/xxx is set but not the original property. What does this mean and how will this affect the game?