I'll probably be doing away with the old scoreboard. You should only see it at the end of maps now, anyway. The new, client-side scoreboard doesn't have these bugs, I don't think.
I'm not familiar with the ctrl+i/ctrl+b bug. I'll have to look into that.
The names have a set limit (32 characters). Formatting codes use up these characters, even though they aren't visible per se. That's not a bug. That's just the way it is.