1 - Log Into Server
2 - Log out of Server (leave game open)
3 - Log in to Server and get the following msg:

Failed to connect to the server
Internal Exception: io.netty.handler.timeout.ReadTimeoutException

If I restart the client, I am able to log in again. But relogs don't work.

I have tested this on a remotely hosted server as well as a server running on the same PC and have the same issue.

No crash reports. Dev Console shows:

Client> [10:38:50] [Client thread/INFO]: Created: 4096x2048 textures/blocks-atlas
Client> [10:38:51] [Client thread/INFO]: Created: 2048x2048 textures/items-atlas
Client> [10:38:56] [Client thread/INFO]: Connecting to XXXIPXXX, 25565
Client> [10:39:00] [Client thread/INFO]: Warning: Clientside chunk ticking took 110 ms
Client> [10:39:14] [Client thread/INFO]: Connecting to XXXIPXXX, 25565
Client> [10:40:16] [Client thread/INFO]: Connecting to XXXIPXXX, 25565