Screen glitches have appeared on the keyboard, notably when a popup window is waiting for text entry.
The issue is mostly frequent in the App Store, where users are required to enter their passwords before purchasing apps.
The guys at The Next Web have discovered that a software problem is causing the glitches.
Their conclusion is that the issue is not linked to the keyboard, and that it’s rather a “texture” problem that could crop up anywhere.
The site writes that Apple knows about the matter and a fix should soon arrive.