Spark v2 - LCD always on?

Hi. I recently bought a Brewpi Spark v2 and built my fermentation chamber (thanks to the awesome fridge hacking guide I found on the website). I updated to the latest release (0.4.3) and I’ve been running tests for a couple of days. It seems to work just fine.

I’m wondering if the display/backlight should turn off at some point or if it is supposed to stay always on.