Health status bug

Taking certain things(such as palace orcs) down from uninjured to barely injured takes at least as much time as taking them to badly wounded from there. I don't think that's how it's worked in the past.

Not a bug.  A system was put into place to make the squishiest enemies a little tougher to beat.  If you are quite a bit higher in level than said enemies, they have a chance of starting out with some minor damage reduction or elemental resistances, which you are eventually wearing through...it makes the lower level enemies last just a little bit longer against all the epic characters running around.

Ah, I see. Cool. It seems to me that at L40 it's more of a norm than a chance, though.