This is happening constantly in our alliance. People that arent crashing, and just cant use their second attack. In our current war, we have 7 ghost attacks (dont show up as win or loss, just in the totals), and at least 5 people unable to use their second attack. When its a really close war, its a pretty terrible customer experience.
We've also had people complete battles for multiple stars, lose all their troops tactics generals mercs etc...and the victory simply doesnt show up. Bad for morale.