Metronome click sometimes not working

Hey i was wondering if anyone els is having this issue where the precount for the metronome click isn’t heard? sometimes it works and sometimes not and i can’t seem to figure it out. All my settings are right but it just sometimes … like 50 percent of the time, not want to kick in.
imac 16gb mem ur28m cc121 etc

If you would take the time to read the documentation supplied with Cubase Pro 8 you’d know this issue is already well known, including cause and workaround 'til it’s fixed.