I noticed on the A350-900 (Cathay Pacific Livery - not sure if it matters) the right spoiler was deployed during flight. It didn't have any performance effect on the aircraft, and the systems didn't notify me of any issue. Tried deploying the spoilers and then retracting. The left side seems to work fine, but the right side stayed deployed. Not sure if anyone else has had this issue but I thought I would report it.