Code suggestion for initState/dispose/setState no longer works in Flutter3

[keybow007]

With Flutter 3.0, code suggestion for initState/dispose/setState no longer works. It worked for Flutter 2.10.
This issue was found in both Windows(10) and Mac(12.3.1).

Steps to Reproduce

1. Start typing in ini.
2. Hit control-space for auto suggestions
3. Nothing comes up yet.

（It worked in Flutter 2.10.x）

The screenshots are for initState, but the same thing happens with dispose and setState.

Version info

`Running flutter doctor...
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.0.0, on macOS 12.3.1 21E258 darwin-x64, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 13.3.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2021.1)
[✓] Android Studio (version 2021.2)
[✓] IntelliJ IDEA Community Edition (version 2019.1.2)
[✓] VS Code (version 1.67.0)
[✓] Connected device (3 available)
[✓] HTTP Host Availability

• No issues found!
`

[stevemessick]

This is not a Flutter plugin issue, but it is serious (IMO). I copied this to a new issue in the Dart SDK repo:
dart-lang/sdk#49027

[ldsouza93]

I'm facing the same issue, flutter updates coming with a lot of problems

[Nathan617]

Hi, having the same issue. setState and Colors are not autocompleting anymore. for example if I type setS I have no autocomplete. Same if I type red it doesn't propose Colors.red anymore. Just 2 examples I have here.

[lore-co]

setState still isn't showing