@DSKenshirou_X Sorry to bring this up, but I was able unfortunately to have the same bug, but this time I have more information to provide, still no video, because that would mean taking a loss in war...
Where did this happen?
War Modifier : Steroids. No pain No Gain
Tank units have energy gained when attacked increased by 200%
Team attacking :
Dark Dracul, Spirit Wolf, Spectral Drake, Hydra and Plant Soul
Team defending :
1st wave: Cauldron Fiend, Skeledeer, Dark Horse, Head Crab, and Doom 'Shroom.
2nd wave: Moon Drake,Dust Devil, Dwarven Archer, Bulwark Angel and Dark Horse
How it happened ?
Attack in Manual on 1st wave, crab jumped on Plant, my whole team survived, I hit Auto button, my heroes get full energy before moving to 2nd stage. At this point it is hard to say who doing what because it goes so fast, but Dracul uses his white skill as well as Spectral who I believe take possession of Dust Devil or Moon Drake. Within seconds, left on battlefield my Spectral against opponent's Archer. My spectral has his energy bar half full. Archer keeps firing at Spectral, who at some point, get full energy bar, but DOESN'T use his white skill despite being at full energy, and only performing BASIC ATTACKS. Archer keeps healing herself way faster than Spectral
can harm her. I watched this for over a minute, and then lost with timeout because no one can kill the opponent.