Problem with Application.Quit and Async networking

Hello, I am currently creating an application using Unity that makes heavy usage of some built in C# Async callback features, specifically for networking.

For some reason though, even when I call Application.Quit, the component continues updating and the Quit does not occur. Is there any way to figure out exactly what is preventing the Application from quitting?

I have verified that all my sockets are closed/shutdown/nullified before calling quit, but I am assuming that there are still threads alive with pending operations.

I have been using a "delegate" based approach but if there is a workaround using thread-pools or another method, I would be happy to try this. Even a way to determine what is preventing the quit would be extremely helpful.

Would it help to try to "Destroy" the Networking component?

Thanks in advance!