I had Yuna in play which had returned a Summon Bahamut from the graveyard. I had also played an Overlord of the Hauntwoods, and an Overlord of the Mistmoors. Opponent had two blockers. I had sufficient for lethal damage in the air but the opponent chose to block anyways. While it did not have an adverse effect on the game, it is still a bug. When I hovered over Yuna before leaving the match I noticed that Yuna read that she had the same bonus she gives to enchantment creatures even though she was a normal card with 2 +1/+1 counters on her.
Again, it didn't affect the game but just wanted to let you know what I found. I haven't thought to check during gameplay to see if the bonus was given any other time. I had no need to check but am glad I did. It may do that in other games and if so, then it needs to be corrected.