I don't get experience for mobs that I have personally claimed or claimed by my fellow party members. However, clearly shown in my screenshot, I still lose durability on my gear and receive items that clearly shows that I'm participating in the Fate. Something that isn't shown on the screenshot is that mobs that were killed during Fate, when applicable would actually fill out my hunting log.

I reported this bug two times the first time was last week, nothing was done about it.