How to reproduce:
1. Open project "NetworkTransportIssue-2020.3.zip"
2. Open "NetworkTransportTest" Scene (Assets>NetworkTransportTest)
3. Enter the Play Mode
4. In the Game window click the "Server Bind" button
5. Click the "Client Connect" button
6. Observe the Console log
7. Click the "Client Connect" button again
8. Observe the Console log

Expected result: No warning is shown
Actual result: "Dropping connect request for an already connected endpoint" warning is shown when connecting the first time

Reproducible with: 1.0.0-pre.5, 1.0.0-pre.7 (2020.3.20f1, 2021.1.25f1, 2021.2.0b16, 2022.1.0a12)
Could not test with: 2019.4.31f1 (Errors: Library/PackageCache/com.unity.collections@1.0.0-pre.5/Unity.Collections/NativeList.cs(274,16): error CS0208: Cannot take the address of, get the size of, or declare a pointer to a managed type ('UnsafeList<T>')), 1.0.0-pre.4 (Errors: "NullReferenceException: Object reference not set to an instance of an object Origin.Sandbox.Kim.Networking.NetworkTransportTest.Update () (at Assets/NetworkTransportTest.cs:244)")