I was playing that mode just 5 min ago, and when anyone on my team tried to capture the other team flag, the flag wasn't there even thou there was an arrow pointing the flag was there and no one else had the flag (an arrow pointing to protect the carrier). I don' t know if it was a bug or a glitch, but it was the first time I have seen that this far. All game long no one was able to capture the flag on my team, except the free flag that appear at the bottom. The other team had no trouble getting our flag.
If anyone else had the same situation feel free to comments.