Screenshot or image:
What you were expecting to happen, and what actually happened:
I won the Paragon battle, and expected it to count as a victory, but instead got an error message, and on forced restart the match counted as a defeat. I got a Google play accomplishment at the same moment for defeating the Paragon in a GW battle.
How often does this happen? When did it begin happening?
Just this once so far
Steps to make it happen again