in-game bug

While working on the Engineer mission, a large number of players—including myself—have run into an issue where repairing vehicles grants no experience. After tanks and APCs take damage, we use the blowtorch to fix them: the repair bar refills as normal, but we receive zero XP. I checked my mission log and saw that the final Engineer task—“Repair vehicles to earn 6,000 XP”—has been stuck at 0. No matter how much we repair in regular matches, the counter never increases. This prevents us from both leveling up and finishing a mandatory mission, making the bug extremely frustrating and severely hurting the overall game experience.