Based on a comment and subsequent upvotes from Bug reopen vs. new:Citing bug IDs in patch notes is just.. very unfriendly.  KrelpIt appears at least some people feel that referencing bug IDs in patch notes is not a good idea. I'm a fairly inexperienced developer, so I'm wondering why that's the case. 
Why could citing bug IDs in patch notes be considered a bad practice?
issue tracking;bug report;software patches
In my opinion, it's a good practice, assuming your users have read access to your bug database.  There are lots of times when people are waiting on a certain bug to be fixed in order to decide when to upgrade.I think what's frowned upon is only citing the bug id and nothing else.  You should always also supply a description that is understandable without going to the bug tracker.  That also allows you to switch bug trackers in the future without entirely invalidating your previous release notes.