I'm not sure if this is really a PitBull problem or a DogTag problem. When I play my druid and I'm grouped with another druid, the incorrect druid form is sometimes displayed for my character. This happens when the other druid goes into Tree of Life form. Provided I'm in caster form (that is, no form at all, just a Tauren standing there) my own player frame indicates that I am in Tree of Life form. When I switch to cat or bear form, the display switches and correctly indicates my feral form. I'm not sure what happens if I shift back to caster form, I haven't paid attention to that. I'm also not sure if this is happening when I'm grouped with a druid in moonkin form, but I'd wager it happens there as well.