zsh tab completion bug on ubuntu

I got it! Darn. It's my prompt

instead of:

PS1=$'%B%F{$fg[green]%}${PWD/#$HOME/~}%{$reset_color%}`git-prompt` ${VIMODE} '

I should just do

PS1=$'%{$fg_bold[green]%}${PWD/#$HOME/~}%{$reset_color%}`git-prompt` ${VIMODE} '

And everything works fine now...