Ok this new mechanic just doesn't work.

Every time you deal damage from stealth or something that doesn't trigger combat, enemies heal to full. And it looks like a spectacular magic heal with huge visuals of course. I just wasted some alchemist's fire trying to soften up a group of enemies. They just healed to full. And then again after taking another tick of damage.

I'm starting to hate the whole arcade game feel I'm getting. This is supposed to be an RPG. They fix something that wasn't broken (5e), then create a couple of new problems, then fix the new problems with some new awful mechanics that take the game further from the actual ruleset.