This is something that actually happened to me. In my city we have countdown timers on our crosswalk lights that let you know how many seconds you have to finish crossing the road, like this
As I was walking home from work about to cross the street I glanced at the timer, it showed I had 5 seconds remaining. "Ok," I thought to myself, "that's enough time", but to my surprise as I stepped onto the street the timer switched to a 6!
I was briefly confused about the timer counting up, rather than down, but after another second when the timer switched again everything made sense. The timer wasn't counting up, do you know what was wrong with it and what I saw after the 6?
This is my first question here, hopefully it's a fun little puzzle, not sure what tags would be most appropriate though!