Rustfmt duplicate associated type bound in the presence of comment

I tried this code:

trait Foo {
    type Bar<'a>: Baz1 // 
     where Self: 'a;
}

Run rustfmt

trait Foo {
    type Bar<'a>: Baz1
    : Baz1 //
    where
        Self: 'a;
}

Can reproduce without <'a>, but the code would be pointless in that case.

Somewhat related: comment is discarded

trait Foo {
    type Bar: Baz1 // what
    ;
}

Run rustfmt

trait Foo {
    type Bar: Baz1;
}

Meta

rustfmt 1.7.1-nightly (35b658f 2024-07-08)

<backtrace>

Start by running rustfmt 1.7.1-nightly on the two Rust snippets in the issue and compare the output with the reported results. Trace the formatter path handling associated type bounds, lifetimes, and comments. Done means the duplicate Baz1 bound is not emitted and the inline comment is preserved appropriately.