"Expand macro recursively" no longer works for custom derives

[SludgePhD]

rust-analyzer version: 0.3.2803-standalone

rustc version: 1.93.0

editor or extension: VS Code

relevant settings: none

code snippet to reproduce:
lib.rs:

#[derive(Trait)]
struct S;

mac/lib.rs:

use proc_macro::{Literal, TokenStream, TokenTree};

#[proc_macro_derive(Trait)]
pub fn derive(item: TokenStream) -> TokenStream {
    let string = item.to_string();
    TokenStream::from_iter([TokenTree::Literal(Literal::string(&string))])
}

Placing the cursor in the Trait identifier no longer highlights Trait as a use (as it does for other traits), and "expand macro recursively" doesn't work (it opens a file that only contains "Not available").

Adding Default before Trait in the list of derives fixes the issue, apparently permanently (removing Default again keeps Trait working).

[A4-Tacks]

Cannot reproduce in the rust-analyzer 0.4.2804-standalone

Considering the possibility that r-a has not been fully indexed? Wait for some time and try a few more times?

[SludgePhD]

Hmm, now I also struggle to reproduce the issue, but it still happens (after indexing is complete) in a bigger project.

[Veykril]

Pretty sure this is fallout of the same issue causing #21721