CRJ-200 First Officer reported when deploying flight spoilers during approach the aircraft rolled uncommanded due to right spoilers deployed and left remaining stowed. Flight crew stowed flight spoilers and continued the approach.

Narrative

During our arrival to ZZZ we were flying the GPS to Runway XXL. While descending we received a Flight Spoilers status message. Looking at our flight controls page we could see that both spoilers appeared to be deployed evenly and matched with the current position of the spoilers lever. We continued the approach and while turning onto final we attempted to use spoilers and experienced and strong roll to the right; looking at the page it appeared that the right spoilers were deployed while the left spoilers remained stowed. We then received a caution message for FLT Spoilers and the PF immediately stowed the spoilers and disengaged autopilot. The Captain elected to continue the approach without running the QRH based on the current conditions as we were in visual condition with the runway in sight and the aircraft remained stable. Once on the ground; we reviewed the QRH procedure for the caution message which stated to stow the flight spoilers. Cause: The weather was the largest contributing factor in this event. Without the weather we would have been more likely to discontinue the approach and hold while troubleshooting the issue; however; we both agreed that based on the current conditions we felt comfortable to continue with the approach and that a safe landing could still be made and was the most favorable option.Suggestions: Looking back I don't feel as if there was much that could have been done to avoid the situation considering the conditions. Going missed to troubleshoot would have only increased the risk; putting us closer to the weather with an aircraft that was experiencing flight control issues.