Incorrect defensive players

Due to a shortage of decent CB, I have 2 safety's that I recently grabbed in the CB position, however when playing a game, my CB position is filled with a CB I am developing (and not ready to play) and my best RB.

Please adjust this, I don't really want my RB playing both ways, and if I am putting a safety on the field in a defensive position (especially at corner) he should be able to play there
This appears to occur only in non pro formation defenses, which may be similar to another bug reported
Yep, the same thing I was talking about. The only way to fix this right now, to keep the players on the field you want is to uncheck all defenses except anti-pro set. Hope that helps and they fix this soons.
Thank you guys for reporting it. The bug will be fixed asap.