requires does not throw error when other agrument from a group is passed

[Iamnotagenius]

I don't know if this is a bug or not, I'm not quite sure here.
Here's an MRE:

use clap::{Command, ArgGroup, arg};

fn main() {
    let cli = Command::new("mre")
        .arg(arg!(--first))
        .arg(arg!(--second))
        .group(ArgGroup::new("group")
               .multiple(false)
               .args(["first", "second"]))
        .arg(arg!(--"requires-second").requires("second"))
        .get_matches();
}

When I supply only --requires-second I get a suggestion to use --second as expected, however, when I supply --first instead, it suddenly succeeds. Other odd thing is when I set .required(true) for the group the suggestion after supplying --requires-second changes and now it shows <--first|--second> to be required.

For clarity, I'm using clap 4.5.4.