Im aware of the toggle ...
But that meaning offhand attack Sneak Attack is nothing but wild asumption. :-/
Is it a "wild" assumption that they will try to make the game worlk more like PnP rules?
Especially when, with multiclassing, an extra bonus action is so very very broken? There is a lot more you can do with a bonus action than make an off-hand attack. Hello quickened spell. Hello berserker frenzy.