Problem: when you put a point in the talent tree to learn faerie fire and you buy from trainer rank2 and logout and log back in, the talent is reset to 0, like you never put a point in it, but you are still able to buy higher ranks.
how to reproduce: Make a druid, level it up so that it has enough talent points, put a talent point in the feral tree on the faerie fire.
then buy the rank2 on the trainer and simply logoff.
log back in and you will see this
the talent is set back to 0
you can buy rank3
and even rank 4