Description:
Mindstalker (Beguiler Cipher + Debonaire Rogue) attacks a target afflicted with charm via Whisper of Treason. Sneak Attack's +30% damage successfully applies, since the target was affected by the charm affliction, but Soul Whip only applies its +10% damage, instead of the +20% that Beguilers should deal when attacking Sneak Attack-able targets.
Steps to Reproduce the Issue:
1. Afflict an enemy with Whispers of Treason on a Beguiler/Debonaire Mindstalker
2. Crit the charmed target with a basic attack
3. Confirm that Sneak Attack applied, since the target was afflicted by a mind affliction (charm) for +30%
4. Confirm that, despite the target being sneak attacked, Soul Whip only applied a +10% damage bonus
Attached screenshot shows damage applied by Soul Whip only applied +10%, despite Sneak Attack also being present on the attack at +30%.