Objects or icons which are making an unwanted move in games and vice versa affects the usability of game.
Player moves are one of the important part of gameplay. Player movements should be logical, consistent and optimized [1].
If the game does not follow the expected behaviour, it causes hindrance in the usability of game. It does not cause any violation in the game rules, but it makes the game clumsy to play.
Developers should focus on these Anti-Patterns keenly, as it can reduce the demand of game in the market.
Consider the case of board game such as chess which requires grabbing and moving the pieces in game. Thus, the player should not be allowed to move jail pieces. Similarly, there should be a check on moving pieces so that the players does not moves the piece which is not of his/her colour. This avoids unnecessary extra work.
[1] Korhonen and E. M. Koivisto. Playability heuristics for mobile games. In Proceedings of the 8th conference on Human-computer interaction with mobiledevices and services, pages 9–16, 2006.