I think he means when you pass out to the wing and, for example, your 14 has the ball, generally your players come out to ruck. This means whether you're set to play through the middle or spread it wide, all passes go a few feet at a time. This is because it is already wide, ergo can't pass wider, and with play through the middle your forwards are already there so just passes to them
Definitely a bug, and happens on both touch lines. Only way around it is kicking or, potentially as I haven't tried this, 1 in the ruck so your players don't bunch up out wide