No it's not you. Bungie has a new universal wipe mechanic - if you don't complete whatever activity you're doing within a randomly generated amount of time you will kicked to the start menu... This is in direct response to guardians wanting more difficult content. Hell, I just completed the exotic quest solo-flawless. Grabbed the final chest, claimed 3 triumphs, and returned to orbit. Was immediately met with a weasel and when I returned the 3 triumphs I claimed were locked again. Went back to do it again and was weaseled during the space walk. That's what brought me here myself.