Facebook today acknowledged its awareness of an issue raised by a few iOS users last week, who saw large amounts of battery drain on their iPhones while the social networking app ran in the background, even with background app refresh toggled off. Speaking with TechCrunch, a Facebook spokesperson confirmed the company’s awareness of the bug and promised a fix would be in place “soon.”

A number of Facebook users have commented on the issue of background battery drain over the past week, with users on the MacRumors Forums posting about the issue as far back as last Thursday. One poster saw Facebook responsible for a dramatic 39 percent battery usage over a six day period, despite having background app refresh set to off.