Default Bluetooth stack ?

I used to be able to connect my small keyboard to my phones. But the pin dialog box used to be different. It would pop up a box where you would type a 4 digit number in it from the keyboard. Then the same number from the phone.
Now there is no place to input a pin. It's simply a dialog box with the pin showing. It says to type the pin from the keyboard and hit enter.
Question: is this a bluestack dialog box?
From a CM rom, the dialog box is the old style. But in sense roms it's the new style.
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