Cannot delete from array?

[Skeeve]

package main

import (
	"fmt"

	"github.com/ohler55/ojg"
	"github.com/ohler55/ojg/jp"
	"github.com/ohler55/ojg/sen"
)

func main() {
	data := map[string]any{"a": 1, "b": []any{0, 1, "2", 3, 4, 5}, "c": 3}
	if err := jp.MustParseString("$.b[2]").Del(data); err != nil {
		panic(err)
	}
	fmt.Println(sen.String(data, &ojg.Options{Sort: true}))

}

I would have expected the output to be:

{a:1 b:[0 1 3 4 5] c:3}

But instead it is

{a:1 b:[0 1 null 3 4 5] c:3}

Is this a misunderstanding on my part or a bug?