They are not updating the number in real time. Mine was 190 then 25-ish mins later I was just in. No count down really.
They mentioned this in the patch notes but it certainly feels bad to not see it go down. It actually is though.
We should note that the higher your queue number appears, the slower the number will refresh in the prompt. The number is still refreshing in the background, so we do not recommend leaving queue as this will create further delays to you entering the game during these high traffic windows.