The term refers to malfunctions or errors encountered within the iOS 18 operating system. These can manifest as unexpected application behavior, system instability, or user interface anomalies. For example, an application might unexpectedly close, the device could freeze, or graphical elements could appear distorted.
Understanding the nature and frequency of these errors is important for both end-users and developers. Addressing such issues ensures a smoother user experience and maintains device reliability. Historically, new operating system releases, including iOS versions, often contain initial imperfections that are subsequently resolved through updates.