`Rebuild All` hangs forever

[linux4life798]

When pressing the Rebuild All button in the JAVA PROJECT window, the build progress stays at 0% and runs forever. This can be seen on a new gradle project. It simply says Java: Background task - 0% with a spinwheel, forever.

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Reproduction:

I am running on Debian GNU/Linux 13 (trixie) with openjdk-21-jdk and VSCode Insiders version 1.101.0-1749243562.

Extension Name	Extension Identifier	Version
Extension Pack for Java	vscjava.vscode-java-pack	0.29.2
Gradle for Java	vscjava.vscode-gradle	3.16.4
Project Manager for Java	vscjava.vscode-java-dependency	0.24.1
Maven for Java	vscjava.vscode-maven	0.44.0
Language Support for Java(TM) by Red Hat	redhat.java	1.42.0
Debugger for Java	vscjava.vscode-java-debug	0.58.2

I simply do the following:

mkdir GUITest3
cd GUITest3
gradle wrapper --gradle-version 8.14.1
./gradlew init
./gradlew build
# Success!

# Open VSCode here
code-insiders .

You will see the workspace initialization in the bottom left of VSCode. Eventually, it will say "Java: Ready".

Open/expand the JAVA PROJECT window in File Explorer panel and click the Rebuild All icon.

After some building steps, you will see Java: Background task - 0% is stuck in the bottom bar of the UI