Can't select and transform faces in UV Editor I want to move a face in UV Editor I but I can't. I can't even select different faces in UV Editor. I have cursor with red circle around it in UV Editor. In 3D View I can move any faces properly.
P.S. It stretches faces if I click and drag along them.
You probably have the UV Sculpt enabled. Disable it via Uvs-->UV Sculpt or press Q.