[Milhouse]

How does one reenable long press?

Are you saying there's a problem with longpress? Please describe in more detail...

I am using a fire tv bluetooth remote with a nuc5c, when I press the "enter" button I start to play a movie. It used to be so that when I long-pressed the "enter" button the context menu would come up, but when I try to hold the "enter" button it is doing repeat presses of play instead of a long press.

Identify the build that introduced the change of behaviour. Assuming this is intentional then you'll need to create a custom remote.xml that includes your longpress.