v1.10beta 100+ immunities acting as psuedo absorb:

[brianc84]

Could you check an attack that does have physical and one that doesn't have any type of non-physical (as control tests, to ascertain, e.g., whether >0 damage must be present for the MDR or DR to have any effect)?

MDR isn't affecting the damage from a pure physical attack, and DR isn't affecting the damage from a purely elemental/magic attack. It seems to me that more than one damage type is needed (not necessarily part physical and magical, just two differing types) in order for the damage reductions to 'overflow' to other damage types.

Could you check an elemental (or, iirc, Crescent Moon "magic") direct (not percent) absorb as well (looking for the negative underflow summation effect, naturally)?

Hmm I haven't seen any healing or reduction overflowing there so far.