Time Machine icon not spinning
I am using MBP 15 retina on 10.9. I started Time Machine with external WD HDD. The backup is running but lately I noticed the icon is not spinning when backup is in progress.
I tried turning the showing icon off / on, also tried turning TM off / on, restart MBP but problem not solved.
Anymore suugestion I can try or is this a bug in 10.9?
MacBook Pro with Retina display, OS X Mavericks (10.9)