As of the Sept update the first EQ spell dropped on a structure will do 25% damage. So if I drop a Lvl1 EQ on a Lvl 5 Air Defence it should lower the hitpoints to 750, allowing me to destroy it with 2 x Lvl4 Lightning spells. This is not working in the last few dragon raids, the Air Defence is still standing with a sliver of health remaining.
It was working fine before the hopeless TH11 update so has something changed with that?

