I am using mongodb 4.0 with latest drivers version 3.8.1

Within a transaction, when a value is changed and is not committed yet, outside the transaction we expect to not see that change. This expectation is not happening.

I have written a simple test case to demonstrate this.

 Here is the link to the entire project containing integration test to demonstrate this. It is running mongodb in a docker container, so depends on docker being installed.
https://github.com/arunkjn/mongodbtransactiontest