I also had something akin to this, where I also ulted and died, but instead of being a skeleton I just had lots of sparks coming out of the wires on my character for that life.
Escalating Resilience doesn't display the calculation for bullet damage with both %'s applied from the items 14% and the third tier shop item innate 14%, and this maths gets ignored on the shop calculation. Doesn't effect gameplay as after I buy it and check another item it IS calculated...