Populate does not work when sanitizeFilter is true

[thiagokisaki]

Do you want to request a feature or report a bug?
Report a bug.

What is the current behavior?
Populate does not work when sanitizeFilter is true.

If the current behavior is a bug, please provide the steps to reproduce.

const mongoose = require('mongoose');
const { Schema, model } = mongoose;

mongoose.set('sanitizeFilter', true);

const userSchema = new Schema({
  name: String,
});

const User = model('User', userSchema);

const postSchema = new Schema({
  author: {
    type: Schema.Types.ObjectId,
    ref: 'User',
  },
});

const Post = model('Post', postSchema);

(async () => {
  await mongoose.connect(
    'mongodb://localhost:27017/sanitize-filter-populate-error'
  );

  const user = await User.create({ name: 'John Doe' });
  const post = await Post.create({ author: user._id });

  try {
    await post.populate('author');
  } catch (error) {
    console.error(error);
  }

  console.log(post);
})();

Error:

CastError: Cast to ObjectId failed for value "{ '$in': [ new ObjectId("614399760c0c857487f30596") ] }" (type Object) at path "_id" for model "User"

What is the expected behavior?
No error when populating.

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that "latest" is not a version.
Node.js: v14.17.3
Mongoose: v6.0.6
MongoDB: v5.0.2