I'm sorry, of course it's not the right place to post a bug report, I have been confused by the statement on homepage "Join the forum to get help or help others with FuelPHP, find and report bugs"
If you're not certain it's a bug, it's better to discuss it here first, it keeps the issue tracker clean.
Also, if you encounter anything, first try to reproduce it with the latest development branch (currently 1.7/develop). I'm pretty sure this issue was addressed some time ago.
We've been trying to get 1.7 out the door for the last few weeks, but as soon as we mention the word "release", people all of a sudden find new bugs that need fixin' ;-)