Formatting a Java file sometimes eats parts of the code

This is similar to a bug that existed in Eclipse maybe 5 or 10 years ago.

Every now and then when you press format, part of the code is deleted. This is really super bad for any IDE, especially when you have auto format on save turned on. "Done with your changes? Sure, let me just save and commit. Why did you commit broken code, it doesn't even compile? %#€""

It seems like the formatter and also code highlighting gets out of sync with reality when this happens, e.g. in this example you can see that return is incorrectly colored.

https://user-images.githubusercontent.com/260340/138037841-aabf6088-d086-41f0-9908-98e3ec7eb555.mov

Environment

• Operating System: mac os Big Sur
• JDK version: 17
• Visual Studio Code version: 1.61.1
• Java extension version: 0.82.0

Steps To Reproduce

1. Use VS Code until it happens... there is no reliable way as far as I know

提供された録画と、issue に記載されている formatter およびコードハイライトの動作から始め、macOS、JDK 17、VS Code 1.61.1、Java extension 0.82.0 の一覧にある環境を使用します。断続的に発生する失敗を再現するか、発生条件を絞り込み、その後、フォーマットによってコードが削除されなくなり、ハイライトの同期が維持されることを確認します。