Why has my inspector changed to a strange style on the top part of tag and layer properties?

My unity3d editor recently changed a bit in inspectors and I don’t know why it has become so.
Inspector window changed to a strange style on the top part of tag and layer properties, like this:
[85909-qq截图20170114144219.png|85909]

Instead of being usual like this:
[85910-qq截图20170114144304.png|85910]

And only one of my project has changed, while another project is showing as usual.

Anyone could help?

Make sure your inspector is in Normal mode and not the Debug Mode

To enable the Normal mode either :

  • Click on the little button next to the lock button (top right of the inspector) and select “Normal”
  • Right click on the Inpector title tab and select “Normal”