Alpha-2 Transform Properties

For anyone who does not know already:

I just discovered a new feature in the alpha-2 pre-release. In the Transform Properties of the 3D view there is a new button in front of the transformation values which states “protect this value from being transformed”
I was confused when I grabbed an object and it didn’t move as expected until I found the difference in the transformation panel. I must have activated such a button without noticing.
Here you may protect your object from inadvertent transformation which is a nice feature for me. It also works independent from the Grab, Scale and Rotate axis restriction.