Is this a bug or normality of the Notification Center?
Look at the screenshot.
This phenomenon has shown up since I updated os x ver. "Marvericks" to "Yosemite".
As you can see, Clicking Notication Center's icon, "Today" is selected from the first.
Especially it doesn't matter for work but I want to trace the cause.
Please advice some good idea to me.
MacBook Air, OS X El Capitan (10.11.1), 1.3 GHz Intel Core i5/4 GB 1600 MHz
