Does Couchbase read the transaction docs in background

Hi Team,

I have used transaction object to create doc. SO they are creating some transaction documents with format _txn.

After these docs are created, even though the code is not doing any other operations on transaction or the object pertaining to transaction, I am able to see the _tx doc continously read in audit.log.

Query: Is it expected behaviour for couchbase to read thes tx docs in background?