The public "Bug Reports" forum should be used for reporting bugs that can't be exploited. An "exploitable bug" is one that can be abused to get free gold or free XP or duplicate items or otherwise acquire an unfair advantage over other players in the game.
Bugs which can be exploited, however, should be reported in an email or private message to the DMs. They should not be posted in the public bug reports forum. If you're not sure whether a bug is exploitable or not, please err on the side of caution and assume that it is.
Thank you.
-Arkov