r-a shows leftover tokens error on fine code

[WaffleLapkin]

rust-analyzer version: 5e85158 2022-03-14 nightly
rustc version: rustc 1.61.0-nightly (4ce374923 2022-02-28)

Given the following code:

#[macro_export]
macro_rules! when {
    (
        $(
            $(let $pat:pat = )? $cond:expr => $branch:expr
        ),+
        $(, _ => $def_branch:expr)?
        $(,)?
    ) => {
        $(
            if $(let $pat = )? $cond {
                $branch
            } else
        )+
        {
            $(
                $def_branch
            )?
        }
    };
}

#[test]
fn pattern() {
    let r = when! {
        let Some(x) = None => x,
        let Some(y) = Some(12) => y + 1,
        _ => 0,
    };

    assert_eq!(r, 13);
}

#[test]
fn mixed() {
    let r = when! {
        false => 0,
        let Some(_) = None::<bool> => 0,
        let Some(y) = Some(12) => y + 1,
        true => 1,
        _ => 0,
    };

    assert_eq!(r, 13);
}

r-a highlights both macro invocations saying "leftover tokens rust-analyzer(macro-error)" even though cargo test works fine ie compiler doesn't think that there are leftover tokens.