I have a problem when I truncate a number that has the same decimals that have the  <place> value. the problem is that the value is round to down and give the wrong number. I have the following situation:
a number: 4.56 in my DB and the following query: { $project: { newField: { $trunc: ["$number", 2] }} }
the outcome of this query is 4.55 a wrong value, I was expecting to get the same number that I stored before. The documentation says the following:

Because of that, I don't understand the reason for the error and also the documentation doesn't show an example when the <place> and the <number> has the same digits.

Image reference:

Data on the DB

Output, after apply the query