I understand now. However, my Daeran has the mythic feat "Boundless Healing" - "The healing from any spell source ignores former spell limits, scaling to any class level. In addition, all healing spells are treated as if having the Reach metamagic".But it is not a bug.
Healing spell requires touch but Insane/Confused target can't hmm... consent so you need to do successful touch attack.
It was especially ridiculous in Kingmaker when Tristian with his 50% concealment miss tried to touch insane Valerie with Heal. After three wasted spells I just had no choice but to Chain of Light poor crazy in one place and put Echolocation on him from alchemist.
And it is still correct by rules:
Reach Spell (Metamagic)
Your spells go farther than normal.
Spells modified by this feat that require melee touch attacks instead require ranged touch attacks.