Type Hierarchy stopped working in Android Studio

As you can see in the Type Hierarchy (right side), I don’t see any dropdown button which can show ImageProvider’s subclasses.

However, you can see (in the middle window) that there are many classes which extends ImageProvider. I should be seeing them in the Type Hierarchy but I don’t.

It only works the first time I open Android Studio (or IntelliJ IDEA), and after that it just shows * sign and doesn’t work as intended. This question has already been asked on Stack Overflow, here’s the link

Flutter Doctor:

[✓] Flutter (Channel dev, 2.9.0-0.1.pre, on macOS 12.0.1 21A559 darwin-arm, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 13.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[☠] IntelliJ IDEA Community Edition (the doctor check crashed)
    ✗ Due to an error, the doctor check did not complete. If the error message below is not helpful, please let us know about this issue at
      https://github.com/flutter/flutter/issues.
    ✗ FormatException: Unexpected extension byte (at offset 5)
[✓] VS Code (version 1.63.1)
[✓] Connected device (2 available)

[NanoMichael]

I’m having the same problem. The plugin does not show the type hierarchy completely. For example, the hierarchy of the type Widget shows only a few of its children.

UPDATE

After some tests, I found it gives the wrong hierarchy tree, for example, the hierarchy of the type Layer:

TextureLayer, PictureLayer, and PlatformViewLayer is not the child of the ContainerLayer, instead, it’s Layer’s child.

[iLoveDocs]

@stevemessick For the changes, I only edited some strings there (I don’t remember them now), but no Dart file or code was modified at all.

Thanks