Lights on front panel stay on?

Question

I have a new Bosch dishwasher. I am not sure if this is a problem or not, but the lights on the front of the dishwasher stay on for a long time after the countdown number is "0". The last time I ran the dishwasher I left it for 2 hours and the front lights were still on. The only way I can get the lights to turn off is the hit the ON/OFF button. Are the lights suppose to turn off after it is done drying, and what is the drying time? I looked in the manual and it doesn't show drying times. This is the 2nd Bosch dishwasher I have had and I don't remember the 1st one doing this.