Have you checked, that in Kmenu -> System Settings -> Keyboard & Mouse -> Keyboard -> Enable keyboard repeat is ticked on?
Ticking it off is the only way to reproduce this on my system (though, then it would be the wanted behaviour, unless it isn't turned off by purpose).
Have you checked, that in Kmenu -> System Settings -> Keyboard & Mouse -> Keyboard -> Enable keyboard repeat is ticked on?
Ticking it off is the only way to reproduce this on my system (though, then it would be the wanted behaviour, unless it isn't turned off by purpose).