I tried this code:
#![feature(doc_cfg)]
mod a {
#[doc(cfg(feature = "a"))]
#[cfg(feature = "a")]
pub struct Test1;
}
pub use a::*;
I expected to see this happen:

Instead, this happened:

This is issue from nightly-2023-12-16. First screenshot is of nightly-2023-12-15 and second is of nightly-2023-12-16