DDJ-SR2 Play/Pause & Cue Button light blinking

Hi newby here I seldom use my controller & today I noticed an issue with the play/pause button on right channel, at first it's not working even though repeatedly pressed then after restarting the controller & Serato it sometimes work & sometimes not, also noticed that play/pause button is blinking once music is loaded and cue button also blinks after music is stopped.

Are those blinking light on play/pause & cue button normal during music loading & stopping operations? Only few occasions now that the play/pause button is not working but I know this is not suppose to happen specially that the unit is seldom used & only 11 months old.