Reportatio II d. 16 q. un. (Wad.-Viv. 23, 70-71):
Ad aliud alterius Doctoris dicit unus Doctor quod nihil agit per essentiam, nisi solus Deus, et ipse semper agit. Vel potest dici quod 'per essentiam' potest accipi dupliciter: aliquando ut distinguitur contra illud, quod est per participationem; aliquando ut distinguitur contra per accidens. Primo modo, dico quod nihil est per essentiam nisi Deus, quia omnis veritas, et entitas creata est talis per participationem, et isto modo agens per essentiam semper agit. Secundo modo agens per essentiam, hoc est, non per accidens, non semper agit necessario.
To the other [argument] of the other doctor, one doctor says that nothing except God alone acts through essence, and he always acts. Or it can be said that 'by essence' can be understood doubly: sometimes as it is distinguished against that which is by participation, sometimes as it is distinguished against 'per accidens'. In the first way, I say that nothing is by essence except God, because every truth and created entity is such by participation, and in that way an agent always acts through its essence. In the second way an agent by essence, this is, not per accidens, does not always act necessarily.
Not much, sure, but clear enough to show that simply because Scotus does not talk a lot about a particular feature of the philosophical tradition does not allow us to infer that he rejects it.