Talking to Wulfram bugs out the "Ah you were conspicuously absent from my last fight" affection dialogue. After the quest is complete, you get that, even if everyone is present and fights.

It's not that it's considering Wulfram not acting during his turns of the escort mission as you being absent. You even get that dialogue if you turn down his quest, then kill the skeleton which kills him (and everyone acts).

I tested this a couple times and verified it.