org.eclipse.jdt.core.compiler.problem.potentialNullReference preference not taken into account

Describe the bug
The value of org.eclipse.jdt.core.compiler.problem.potentialNullReference preference seems to not being taken into account.

To Reproduce
Steps to reproduce the behavior:

1. Create a settings.prefs file
2. Add following value to the just created prefs file:

org.eclipse.jdt.core/org.eclipse.jdt.core.compiler.problem.potentialNullReference=ignore

3. In VSCode, under customizations/vscode/setting, set java.settings.url value pointing to the settings.prefs file just created.
4. In the PROBLEMS view, any Potential null pointer access: The variable myVar may be null at this location error should disappear, but does not.

Expected behavior
The configuration is obeyed and the specified warnings disappear.

Environment

• Operating System: DevContainer with mcr.microsoft.com/devcontainers/base Docker image on Debian WSL under Windows 11
• JDK version: openjdk version "1.8.0_482" as Project Java version and openjdk version "25.0.2" 2026-01-20 LTS as the JVM to be used by the Java Language Server
• Visual Studio Code version: 1.114.0
• Java extension version: 1.53.0

Additional Information
Other configuration preferences seems to be working as expected. For example setting org.eclipse.jdt.core/org.eclipse.jdt.core.compiler.problem.deprecation=ignore removes any deprecation warning.

在 VS Code 中使用包含 potentialNullReference 偏好的 settings.prefs 文件重现该问题，然后将其处理方式与据报告可正常工作的 deprecation 偏好进行比较。跟踪 Java 扩展或语言服务器对这些偏好的配置路径；当将 potentialNullReference 设置为 ignore 后，报告的潜在 null 警告被移除时，即表示完成。