Can also confirm it has worked for me. Seems bug might have been fixed during reset! I changed phases from BFA to Pandaria. Used waypoint (/way Vale of Eternal Blossoms:Pandaria 8 59) ran around a bit - nothing, dismissed and resummoned Uuna - nothing, so logged out and back in, summoned Unna and hey presto - she says her lines. Have since completed entire World Tour - Baal here I come!!! Good Luck all and Happy Touring!!!