Since the beta forums are gone, trying to make a list of the legendary bugs. Very possible that I forget some.
Font of Savagery - does not work with "Steadfast Rejuvenation" masteryfixed
Tectonic Spike - does not benefit from talent "Seismic Activity"fixed
Tectonic Spike - does not get range increase from Primal Avatar
Primal Avatar - Incorrectly adding range buff to some skills. Lifewarding Beacon, Beacon of the Drake, Legendary Essence Strike all have a 62m range with the Avatar up
Effervescent Blast - gives two reactive abilities when you get a stack of Effervescence. I think one is for the normal ability and on is legendary.fixed
Vaporize - Tooltip says "Increases damage and healing of critical hits by 0%"fixed
Vaporize - also gives double reactive abilities.fixed
Scald - Buffing elemental damage for everyone, not just the caster. [fixed on PTS i think?]
Cultivate - does not work with "Ethereal Meditation" masteryfixed
Deluge - tooltip says "Your next ability's critical hit chance is increased by 0%"
Deluge - regular version does not give the crit buff
Essence Strike - "Indomitable" mastery gives it a 47m rangefixed
Essence Strike - doesn't benefit from the +5 range from "Exhileration" mastery (also, it should be spelled exhilaration)
Crystalline Smash - second shield does not get applied if you use Crystalline Smash again within 5 seconds.
Upheaval - does not benefit from "Reverberations" talentfixed
Torrential Rain - does not work with "Forest Matron" mastery.fixed
Torrential Rain - legendary effect only adds one tick of damage, very weak for a legendary
Vorpal Salvo - gives two reactive abilities when you have Clarity of Focus stacksfixed