I assume the answer to this is yes but want to be sure. If your inventory slots reach 10 then you effectively have a resilience of 0 at that point. Can fatigue from using abilities cause this to happen? Or does only items? I.E. So say I'm playing a Scout and have 5 inventory slots available. I use 5 fatigue during a combat that brings my inventory capacity up to 10. Would my resilience be 0? 

Thanks!

That’s correct. If your inventory fills up for any reason (fatigue or items), your Resilience drops to 0.