Notification led (pulse light) not working after Android Pie 9.0 update

Hi guys!

I just got the Android Pie update this morning, and the first thing I noticed it's that my notification led (which was working well on Oreo) is not working anymore. I went to settings - notifications - advanced settings - pulse light is turned on. I tried to disable the "do not disturb mode", it didn't work.

Do you have any suggestions? Am I alone with this issue?

Thanks