When sending messages using Bukkit.getConsoleSender().sendMessage() in Java 14, it appears to be adding an extra line to the console.

Test Code:

@Override
public void onEnable() {
    log("testing no color");
    log("§atesting green §btesting blue §ctesting red");
    log("testing no color");
    log("§atesting green §btesting blue §ctesting red");
}

private void log(String message) {
    Bukkit.getConsoleSender().sendMessage(message);
}

Even messages printed from CB/Spigot (ex: the version messages) appear to be doing the same thing

This does not appear to happen on Java 8

This is not a new bug, I noticed this back in 1.16.1 and kept forgetting to report it.