As far as I know, there is no auto update for 2.8.1 nightly build inside the admin panel. So I think it’s safe to stick with different select ( from jayjdk ).
I’m finishing the update package now.
Kailoon, I had the same problem. I expertimented with the code – but it didn’t work. Btw, the dropdown for pages worked ok. I couldn’t find a solution and made textboxes for users to enter ids of categories.