Debugging code with annotation spuriously report problem

[RolKau]

Environment

• Operating System: Ubuntu Focal 20.04.6
• JDK version: 17.0.7
• Visual Studio Code version: 1.82.0
• Extensions:
  • vscjava.vscode-java-pack 0.25.13
  • vscjava.vscode-java-debug 0.54.0
  • redhat.java 1.21.0
  • vscjava.vscode-maven 0.42.0
  • vscjava.vscode-java-dependency 0.23.1
  • vscjava.vscode-java-test 0.39.1

Steps To Reproduce

0. Unzip the attached project.zip file into an otherwise empty directory
1. Start code bug.code-workspace
2. Click that you trust the author of this workspace (to enable debugging)
3. Ensure that no text editors are open for any files
4. Observe that no problems are reported in the Problems pane
5. Open the file src/test/java/com/example/QuxTest.java from the Explorer pane
6. Right-click the triangular play icon next to public class QuxTest
7. Choose Debug Test from the context menu
8. Notice that a problem appear in the Problems pane for file Foo.java
   "The method b() is undefined for the type Mumble"
9. Click on the problem to open file src/main/java/com/example/Foo.java
10. Notice that the problem disappears by itself

Current Result:

Debugging of unit tests halts on an imaginary problem.

Expected Result:

Unit test should launch without any reported errors.

Additional Informations:

I reckon that this problem is related to annotation processing inserting stubs for the depended-on classes, and then these stubs aren't resolved properly. This may be a bug in the language server instead of the extension.

project.zip

[RolKau]

This looked like it was caused by the debugger, but as of VSCode 1.82.2 it is also triggered when the project loads outside of the debugger, so it is moved to redhat-developer/vscode-java#3302.