Intellisense not working when creating a submodule in a Gradle project unless reload vscode window

Environment

• Operating System: Arch linux (Remote Development Host)
• JDK version: Gradle: languageVersion.set(JavaLanguageVersion.of(8)) / System: 17 (installed by sdkman install java)
• Visual Studio Code version: 1.80.2
• Java extension version: v1.21.0

Steps To Reproduce

1. create a new Gradle application project using gradle init and using Kotlin DSL
2. making a new submodule

mkdir -p mylib/src/main/java/com/example/demo
touch mylib/src/main/java/com/example/demo/MyClass.java
# ... and writing some java code for this file

the content of mylib/src/main/java/com/example/demo/build.gradle.kts

plugins {
    id("java")
}


java {
    toolchain {
        languageVersion.set(JavaLanguageVersion.of(8))
    }
}

3. add this submodule to settings.gradle.kts

- include("app")
+ include("app", "mylib")

4. now try to use this lib in app module, it works well, all prompt are working well
5. open mylib/src/main/java/com/example/demo/MyClass.java, try put some code to this file, but there are no any prompt (e.g. press sout should show a dropdown contains a snippet item for System.out.println, but there is no any on there)
6. Ctrl+Shift+P and then running Developer: Reload Window, now all working well

Current Result

see above

Expected Result

see above

Additional Informations

I'm also using vscjava.vscode-gradle.

Please let me know if you can't reproduce this problem or need a log file, I'm busy for working and I will send some detail you need after work.

Reproduce the issue with the Gradle project, settings.gradle.kts, build.gradle.kts, and mylib/src/main/java/com/example/demo/MyClass.java described in the report. Start by comparing IntelliSense before and after Developer: Reload Window, then inspect the Java extension's handling of the newly added submodule. Done means prompts work in MyClass.java without reloading the VS Code window.