Bitdefender total security trey icon temporarily greys out on computer start up

I'm running Windows 10 and Bitdefender total security. I've noticed when I reboot or start up my computer the Bitdefender Icon in the system trey will temporarily grey out for 30 seconds or so. Is this an expected behavior? I've totally reinstalled the Bitdefender product twice now and it's made no difference! Once the icon comes back on it stays on and never greys out again until I restart my computer again. I'm not sure if this is just a bug, something to worry about relating to protection, or simply a normal behavior? Anyone else noticing this?