This is verified by me, this has now happened to Talia twice in the last 5 minutes of play. There were no buff stripping monsters, no monsters at all around us, she has had problems casting true sight on herself, and others. Now her buffs are disappearing. She re-casts them all and they all disappear, again. The buffs she cast on me, and the buffs I cast on myself are all holding strong. This is quite a vulnerable situation.