Board Thread:Game Discussion/@comment-18653705-20131123015034/@comment-12229876-20131126172959

You can also avoid this bug by letting the battle screen show up on your device.. I only experienced this bug when trying to skip past battles as quickly as possible. GoC also encountered it the same way. If you're blowing too many cubes on this bug, then give it a second after you confirm your cube hit and before you hit the skip button.

Or.. just complain and Mobage will compensate you. Hope this helps, guys.