Go To Definition on call expression of union signature only shows one constituent signature

[andrewbranch]

TypeScript Version: 6a559e3

Search Terms: go to definition call expression union signature

Code

interface A {
    (): string
}
interface B {
    (): number
}

declare const fn: A | B;
fn(); // Go To Definition here

Expected behavior:
Should show three definitions: declare const fn: A | B, the call signature from A, and the call signature from B

Actual behavior:
Shows only declare const fn: A | B and the call signature from A

Playground Link