War Energy = minus one?

20180926_135845
One of our players seems to have minus 1 attacs left after making his three attacks in the first war round. This seems to be a bug. Will he have all of his three attacs for the second round?

Have seen this before and normally will be set to 0 after some time.
Yes this player will have the normal 3 attacks that will be given in the second part of war.