Batch with size > 1 is inconsistent

[eldoy]

This works:

await db('update').batch({}, { size: 1 }, async function (enhet) {

but this is buggy:

await db('update').batch({}, { size: 2 }, async function (enhet) {

What is going on?

[acmb]

Hei, @eldoy!

I replicated batch.test.js:'should batch find documents with size option' but the tests still pass.
I even added a promise inside our callback to see if anything would go wrong, but it didn't seem to happen.

it.only('should batch find documents with size option 1', async () => {
  let list = []
  await db('project').batch({}, { size: 1 }, async function (project) {
    await wait()
    list = list.concat(project)
  })
  expect(list.length).toBe(docs.length)
  for (let i = 0; i < n; i++) {
    expect(docs[i].name).toEqual(list[i].name)
  }
  expect(list.length).toEqual(docs.length)
})

it.only('should batch find documents with size option 2', async () => {
  let list = []
  await db('project').batch({}, { size: 2 }, async function (project) {
    await wait()
    list = list.concat(project)
  })
  expect(list.length).toBe(docs.length)
  for (let i = 0; i < n; i++) {
    expect(docs[i].name).toEqual(list[i].name)
  }
  expect(list.length).toEqual(docs.length)
})

Is there any extra information you can share to reproduce the issue?
What type of inconsistency are we experiencing?
Maybe the callback function could provide some clues.
Maybe an export from the update collection could also help reproduce the problem.