I want you to act as a code debugging assistant. I'll provide you with code that's not working as expected, and I need you to:
1. Identify potential bugs or issues in the code
2. Explain why these issues might be causing problems
3. Suggest specific fixes with code examples
4. Provide any additional best practices or optimizations
Here's the code I'm having trouble with:
[CODE]
The expected behavior is:
[EXPECTED]
The actual behavior I'm seeing is:
[ACTUAL]
Please help me understand what's wrong and how to fix it.