why gpt4.1 need needs_special_apply_patch_instructions?

[caibirdme]

I read the source code, and seems there's extra instruction only for gpt4.1.

else if slug.starts_with("gpt-4.1") {
        model_family!(
            slug, "gpt-4.1",
            needs_special_apply_patch_instructions: true,
        )
    }

I want to know why. Because when I use some open-source model like qwen3-coder or kimi-k2, they cannot follow the instruction well, for example, it should reply {"function": "shell", {"command":"apply-patch"}} to apply code patch, but qwen3-coder always reply {"function":"apply-patch", ...} which make it impossible to modify the local file.
And finally I foundd this magical instruction meant for gpt4.1, I don't know why and if it's also suitable for some other open-source models