onbeforeremove not being triggered when list element is removed

[frenautvh]

Mithril 2.2.3

Firefox 117 on MacOS

Code

https://jsfiddle.net/v6qgoczx/

const items = [1, 2, 3]

const TodoItem = {
    view: (v) => m('span', v.attrs.value),
    oncreate: (v) => console.log('create', v.attrs.value),
    onupdate: (v) => console.log('update', v.attrs.value),
    onbeforeupdate: (v) => console.log('beforeupdate', v.attrs.value),
    onremove: (v) => console.log('remove', v.attrs.value),
    onbeforeremove: (v) => console.log('beforeremove', v.attrs.value),
}

const TodoList = {
    view: (v) =>
        m('ul', v.attrs.items.map(item =>
            m('li',
                m(TodoItem, {
                    value: item,
                }))
        ))
}

m.mount(document.body, {
    view: () => m(TodoList, { items })
})

setTimeout(() => {
    items.pop()
    m.redraw();
}, 1000)

Steps to Reproduce

https://jsfiddle.net/v6qgoczx/

Expected Behavior

Outputs :

create 1
create 2
create 3
beforeupdate 1
beforeupdate 2
beforeremove 3 <-- missing
remove 3
update 1
update 2

Current Behavior

Outputs :

create 1
create 2
create 3
beforeupdate 1
beforeupdate 2
remove 3
update 1
update 2

[frenautvh]

This hook is only called on the DOM element that loses its parentNode, but it does not get called in its child elements.

Sorry for the noise

[dead-claudia]

This hook is only called on the DOM element that loses its parentNode, but it does not get called in its child elements.

Sorry for the noise

Yeah, that's intended behavior. Anything else is a bug.