[quote:60700303a3="Dethe"]The BBCode bit seems strange to me, as I have BBCode working in my signature, and on both my profile and the page when I post it has BBCode on.[/quote:60700303a3]

I am working on the issue.  It seems there is a bug in phpbb v2.0.20 which was fixed in 2.0.21:

[Fix] Quoting on boards with HTML enabled