Bugs are good in code. It shows that you're Human. You make mistakes. And you're willing to correct them.

But when they're someone else's bugs in a piece of code they didn't give a flying fuck about documentation, bugs can tick one off. The bigger the project, the better the documentation needs to be. And I'm not taking about java docs. Put proper comments in your code. Especially when it's not a personal project and you fully intend to leave the company.