Problem Statement/Rationale

What is going wrong? What action would you like the Engineering team to take?

The padding information is not rendered in the shell's representation of the packed bits vector. Which if reconstructed will change the intended bit length of the vector.

Steps to Reproduce

How could an engineer replicate the issue you’re reporting?

Enterprise test> db.coll.insertOne({ b: Binary.fromPackedBits(new Uint8Array([0b1111_1111]), 7) })
{
  acknowledged: true,
  insertedId: ObjectId('67f7fed137a914fcd571e27f')
}
Enterprise test> db.coll.findOne({ _id: ObjectId('67f7fed137a914fcd571e27f') })
{
  _id: ObjectId('67f7fed137a914fcd571e27f'),
  b: Binary.fromPackedBits(new Uint8Array([ 255 ])) // No padding information
}

Expected Results

What do you expect to happen?

{
  _id: ObjectId('67f7fed137a914fcd571e27f'),
  b: Binary.fromPackedBits(new Uint8Array([ 255 ]), 7)
}

Actual Results

What do you observe is happening?

Padding argument missing from the fromPackedBits call, which padding defaults to 0 it doesn't throw or warn that its been changed.

Additional Notes

Any additional information that may be useful to include.