Yes, it was strange a little because I didn't touch the display. I have the Mighty 2 years and he looks new so I'm always careful with my devices. You're right because after full charge he became good. Very strange. He was charging and I saw this problem, but after charge and 10-15 minutes, he was absolutely okay. Right now I checked it and yeap, it's okay.If you mean the display showing not all the digits or seems to be foggy/not so bright as it normally is. I had the same problem after cleaning the display. I was careful wiping the screen but the pressure was enough to produce this failure after a few hours not touching it the display was normal again. Maybe you have pushed by accident with your fingers on the display while plugging it in.
I was so disappointed yesterday and wrote to S&B, but they still ignore me. Maybe they'll answer a little later maybe not. The problem they don't work with my country now. It's so stupid.
Thanks for the answer.