I've got a Logitech K520 wireless keyboard, and sometimes I notice that a keypress has not been registered although I'm certain I hit the correct key. After a small experiment, I see the behavior can be reproduced by holding down the SHIFT key and pressing the I and N keys at the same time. The same if holding down the SHIFT key and pressing the V and B keys at the same time.
I suppose this has something to do with how the key switches are read by the keyboard controller. But I've not been able to reproduce the problem on the keyboard of the laptop that the Logitech keyboard is connected to.
Is this due to hardware design in the Logitech keyboard, or is something else going on?