There seems to be a delay in updating health bars in tactical combat after damage is taken or heal spells cast.  Same goes for my units so I have to keep track of unit damage taken and not rely on health bars.

For me, healing spells always update it, but taking damage doesn't seem to work right.  I'll hit an enemy with Twin Strike, for example, and the health bar reflects the first, but not second hit.  This is especially amusing when the second hit scores a kill, because the death animation will play out but the creature still has a health bar!

My bars are always messed up. Many of them never update correctly until the next battle.