What would you do if a developer repeatedly returned a bug with the status 'not reproducible', but you are sure the problem exists?

If a developer repeatedly returns a bug with the status "cannot reproduce," but you are confident that the problem exists, you should act as follows:

• Document the reproduction steps in detail: Ensure your steps are as accurate and reproducible as possible. Add screenshots, videos, or logs.
• Check the environment: The bug may only manifest under certain conditions (browser, OS, settings, data). Clarify and record these conditions.
• Discuss with the developer: Conduct a joint reproduction of the bug to understand why it is not reproducible on the developer's side.
• Use additional tools: Logs, debugging, monitoring to find confirmation of the problem.
• Escalate if necessary: If the bug is critical and confirmed by you, involve a team lead or manager to resolve the conflict.

This approach helps avoid misunderstandings and speeds up bug fixing.