1: THE error only happens on IOS
2: THE error only happens when fast tapping
3: THE error is NOT a loss (valor and cash ARE added)
THE error lookslike a delay in display Of THE double strike that happen when you have tapped again for another attack before double had time to display correctly.
A loss never allows for more then 30k cash to be lost and iT displays 300k, even with an account that is not overvault, also amounth of battle points way exceeds normal loss limit.