It does happen with the BW version, whenever you switch from 1 charge to 2 or vice versa - cancelling the 2nd charge will also reset lightning to full.
I think there are probably 2 different Lightning buffs, and it's recasting them stealthily to do the dual charges.
Another thing you can do is
Lightning > PG > Booster > Stance > Holy
Which gives you the buff sequence
Lightning
Lightning PG
Lightning PG Booster
Lightning PG Booster Stance
PG Booster Stance Lightning Holy
So it's definitely recasting Lightning every time you use another charge.
Pictures of the problem:
I think there are probably 2 different Lightning buffs, and it's recasting them stealthily to do the dual charges.
Another thing you can do is
Lightning > PG > Booster > Stance > Holy
Which gives you the buff sequence
Lightning
Lightning PG
Lightning PG Booster
Lightning PG Booster Stance
PG Booster Stance Lightning Holy
So it's definitely recasting Lightning every time you use another charge.
Pictures of the problem:
Spoiler
This second skill isn't cancelled when you change weapons...


![[Image: litglitch.jpg]](http://img686.imageshack.us/img686/1934/litglitch.jpg)