Default IV updates
The teambuilder now minimizes Attack IVs on Pokémon that don't run physical moves (while maintaining the type of the move Hidden Power, if present). This has been the default on Smogon's recommended movesets for a while, as it reduces the damage taken from Foul Play and confusion. Trick Room and Gyro Ball behave similarly, but minimize Speed IVs instead.
Exceptions: Foul Play (which doesn't use your own Attack stat) and Rapid Spin (which doesn't deal enough damage to count if it's the only physical move used). Metronome will also count as having a physical move.
—Dell on May 18, 2016