There are 4 bugs that I have found annoying in Tremulous, a couple aren't really bugs, but anyhow:
1. If you have less than 15 ammo in a luci, you can charge it indefinitely with no worries about overcharge.
2. Evolving resets the 2 min camp credit timer.
3. If you are typing when the game ends, you do not get the scores unless you hold Tab (default key)
4. Wait, this one is for Balance mod, never-mind, I only got 3.