Struct member suggestions are flanky on windows

[mrpink76]

rust-analyzer version: 5f13d6a 2022-01-25 nightly

rustc version: rustc 1.58.1 (db9d1b20b 2022-01-20)

vscode version: Version: 1.63.2 (user setup) (Commit: 899d46d82c4c95423fb7e10e68eba52050e30ba3, OS: Windows_NT x64 10.0.22000)

The starting point is the following:

struct Test {
    pub field : String,
}

fn main() {
    println!("Hello, world!");
    let x = Test { field: "".to_string()};
    // cursor is placed directly after x on the next line
    let a = x
}

When writing ".fi" fast, the suggestion for "field" is not beeing shown.

If first write the "." and then after a short wait write "fi". The success rate is much higher.

Tried the same thing on vscode on macos (macbook pro) and there I could not reproduce the issue.

The bug happens quite frequently on windows.

A related issue is that the suggestion might disapear if you write two or more aditional characters quickly, that is go from "let a = x.fi" to "let a = x.fiel". It seems to work if you only write one character and then waits for the suggestion before writing another character.

[Veykril]

Duplicate of #10187

[mrpink76]

@Veykril I don't think this is a duplicate of "10187" since this bug is reproducible with a very small code base (hello world size).
This behavior is limited to Windows (no issues in macos/darwin).

[Veykril]

We have plenty more of these kinda issue, but here is a windows specific one of which this might be a duplicate actually #3973
(Truth be told I picked the first one of these that I could find when closing this)

Other related ones #7560 #10263