Game Mechanics: Troll exp modifier?

[Serena]

In our Mistmoore group, our Troll shaman and Dwarf cleric dinged 18 at the same time, so we decided to see where Ougly (troll) would be when Bayer (dwarf) reached one yellow into level. Each was in group for the exact same number of kills, and with no deaths, and on the very mob that Bayer reached one yellow, so too did Ougly.

Were the racial exp modifiers removed? They don't seem to be working.