Try to follow these guidelines when submitting an Issue:
Describe the issue in detail, such as what aspect of the game is affected, whether the issue is only present in single player or multiplayer, etc.
Provide screenshots of the issue in action. But also provide text describing what a screenshot is supposed to demonstrate.
Provide steps to reproduce the issue.
If your issue is a crash, provide the crash report (srb2win.RPT on Windows) or a backtrace if possible.
That being said, these guidelines are not absolute. Some bugs are elusive. You may not know what the issue is exactly, or how to reproduce it. Not all crashes yield a crash report. Just describe issues to the best of your ability!