UI never gives feedback that joining a server with an unsupported protocol version failed

[PureTryOut]

While in the terminal I see an error appearing (a thread panicking to be exact), the UI keeps saying "Connecting to ".

[main.rs:99][INFO] Detected server protocol version 756
thread '<unnamed>' panicked at 'unsupported protocol version: 756', protocol/src/protocol/versions.rs:94:14
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

To reproduce just try to join a 1.17.x server.