I just stumbled upon a bug in TeXnicCenter while wanting to Alt-Tab away to another window, but hitting the wrong key by mistake. If you press Alt + ` (the most upper left key, the same as ~ on an internationally configured keyboard), the program crashes. I've restarted both my computers and retried this, and it's perfectly reproducable and to the best of my knowledge, a reliable bug report.
Since I'm submitting a bug report anyway, I might as well tell you about another one that I've been aware of for quite a number of years now

PS: If there is a better place to report bugs, please let me know. Since the Issue Tracker is down, I thought your own forum would be the best place to try.