Unable to use CurrentDevice variables

Using either Qt Creator 3.4.0 or 3.4.1, I've added a Generic Linux Device in Tools->Options...->Devices. Configured as attached and tested the communication with the device with success.

Then I added a new kit (DeviceKit) and set its Device type to Generic Linux Device and the Device to the added device.

In my project Build&Run configuration, I added my new kit and in the Run Settings I added a Custom Process Step to the Deployment configuration and to the arguments of the command to execute, tried to add:

IP_ADDR=%

This is resolved by Qt Creator to IP_ADDR=
(empty string above). Any other CurrentDevice variables present the same behaviour.

Firing up Qt Creator 3.3.2 with the same configurations resolves the argument correctly to:

IP_ADDR=192.168.69.95