Last week I completed the weekly campaign challenges, but did not notice any gain in XP. I thought this was weird, but I decided I just didn't pay enough attention to where I was before I completed them. Today, before taking on the new weekly challenges, I marked it down at SR20 with 7069 XP.
Note, I just got the achievement last night for reaching SR20, which is reflected in my achievement log ("Movin' On Up", 11/11).
I completed both of the weekly challenges today simultaneously by finishing Requiem on Legendary with Tough Luck turned on, and I got confirmation of the completion on my screen. When I looked at my XP in the Spartan Hub, and not only am I still at SR20 , which shouldn't be the case (7069 + 6750 completion is more than the 11530 required to rank up), but now I have 3379 XP.
That's right - I actually LOST XP for completing the weekly challenges. I could not have leveled up from SR19 to SR20, because as I already stated, I reached SR20 last night and I have proof of that.
343, PLEASE acknowledge this bug and correct it. The challenges are fairly easy, but I still shouldn't feel like I spent 40 minutes playing to be punished by the system.
Thanks.