知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 @MarkusMeskanen: As the item is immutable, and when you mutated it in position you could possibly not specialise it in a subclass. This was noticed by Khushal Bherwani who posted an example on X, I am in a position to replicate it, here is my GIF of https://readytomovevillainnoida.blogspot.com/2025/09/central-park-104-sector-104-gurgaon.html