I have a T665. In the current version of DriveMode 3.00007, and the previous one, the screen lock does not work. I press the lock icon, it activates, but I can still move the map if I move my hand or finger, and the rest of the buttons work too.

To everyone talking about the lock feature. You guys noticed that in the map view settings > go to map view (click the cog wheel in the top right corner) there is a setting to set the behaviour of the lock button right? Setting: DISABLE MAP TOUCH WHEN LOCKED -> This needs to be enabled for the lock to disable touch AUTO LOCK WHEN MOVING and AUTO UNLOCK WHEN STOPPED -> Make sure these settings are not messing with your lock function

Solved. Thanks 😉