I agree, the current state of stealth is baffling, the NPCs in Skyrim at least took a little stroll before assuming it was the wind that drove an arrow through their stomach.
From what we see in the videos from the last PFH, it appears that hide is now an action instead of a bonus action, so that should help making stealth during combat a little less broken, unless you're a rogue I guess.
I hope Larian has some changes in store for us in the release version, or that they at least pay attention to this matter in future patches.
