“We are aware that a small number of users are having issues with their third-generation butterfly keyboard and for that we are sorry,” MacRumors quoted an Apple spokesperson as saying on Wednesday. The iPhone-maker designed and incorporated the mechanism in new MacBooks and MacPro keyboards to distribute the pressure on a single key evenly, thus increasing the precision in typing. While the iPhone-maker initiated a service programme offering free repairs of affected 2015-17 MacBook and 2016-17 MacBook Pro models with first- and second-generation butterfly keyboards, the latest 2018 MacBook Pro and 2018 MacBook Air models with third-generation butterfly keyboards do not qualify at this time, the report added. The company did not disclose any rectification plans or programmes for the faulted devices.