We had a 'db.currentOp' bug reported recently in MHOUSE-6555.
This was apparently caused by a new mongosh flag - for currentOp - that was added, but isn't supported in ADF. mongosh users of the current version, are encountering a failure they can't remediate.
We'd like for this option to conditionally not be sent, when speaking to ADF.
ADF exposes "buildInfo" information that can be used to determine what kind of 'server' clients are communicating with.
Our URIs are also standardized - ".query.mongodb.net" - so the DNS suffix could equally be used (and is less likely to change).