I will do that, thank you for the offer.
I can imagine that some people would like what I currently got: they always want their LEDs on but would appreciate their keyboard going full power save when they leave their desk.
I on the other hand would like to stick with the original functionality. Imagine you are watching a twitch stream and chat on occasion. You don't want to wait a couple of seconds every time you'd like to post something in chat. But you also don't want the keyboard to be fully lit all the time, as it drains battery.
I think here applies what applies everywhere else: if you come up with an interesting new functionality, give users the choice, or even let them configure both timeouts (and let them set "0" for disabling the timeout). At least have your UI stating the correct functionality, as "Enable LED auto shut-off" is clearly not correct anymore.
UPDATE: Ticket created.