What does 'address an issue' mean? [closed]

At least one dictionary (ODO) has "Think about and begin to deal with (an issue or problem)" which is related to golfing usage:

3. Think about and begin to deal with (an issue or problem)
The second half of this book, once the history has been dealt with, addresses the problems of the present, issue by issue.

4. Golf Take up one’s stance and prepare to hit (the ball)

You might find a use like

The bug which caused the application to crash was addressed in Version 4.5.6

where the writer actually means fixed — or at least wants to give that impression — as there is no point in reporting that a bug has merely been considered unless it is actually fixed. I would call this a specialised use, a jargon word, as its intended meaning is an extension of "thought about".

To address an issue is to direct attention to it. It doesn't mean the issue will be solved, only acknowledged. In a similar way in golf, when teeing off you address the ball before swinging. That doesn't mean you're actually going to hit it, and if you do it doesn't mean you'll do it very well. One can address an issue or problem, or in other words acknowledge, or focus on it for a long time. That doesn't in and of itself solve the problem. So I think your colleague is correct in saying that addressing an issue is 'to bring under discussion'.