Cleansing Burst does not benefit from Healing
This is known “issue”, but they probably won’t change it.
You know why? Because now healing turret is only viable option for engi.
It is shot CD heavy burst AoE healing (as long as you know how to blast turret with its own waterfield) with condition curing. It is probably the most powerful healing ability in the game (and sits in right spot imho), and other are heavily situation reliant (AED have horrendous CD, and puny healing unless you use its while dying, and first aid kit don’t do much healing and require you to have kit equipped, and all is single target → over time you should be able to heal a bit more to single target, but you loose so much damage during this time that I wouldn’t advise , also note worthy is long casting time on self heal).