Hi guys!
I haven’t visited Blender Artist for quite some time, I hope you guys forgive me 
Now I’m back, and have experienced a strange problem. I cannot scale a verts, edges, and faces to a 3D cursor in edit mode. Median point, bounding box, active element pivot methods works fine, except a 3D cursor method.
In a newly created objects everything works just perfect, I’ve double checked that.
As you can see, a 3D cursor pivot mode is on…
…but a selected vertices scale to an object origin. 
If someone could help me, I would be extremely grateful.
SOLUTION:
All that happend becouse Z scale of object was 0. It also made impossible to extrude/move vertices along Z axis. CTRL+a (Scale) did the job.
