The fixVersion for SERVER-53477 is 4.9.0, which refers to a development/unstable version that will eventually become MongoDB 5.0. The historical MongoDB versioning scheme uses odd numbered release series (
Y is odd) to indicate development series. The next major release series of MongoDB will be 5.0, which also includes a new quarterly release schedule and versioning approach: Accelerating Delivery with a New Quarterly Release Cycle, Starting with MongoDB 5.0.
SERVER-53477 was raised during the development cycle and it is not clear if the code changes are relevant for 4.0. If there is benefit in a backport, the team responsible for that development area will assess the effort and risk involved.
I assume you are hoping this may address SERVER-54805, but more investigation is needed before determining if that is the case.