Language error in orders

I did upgrade and everything its fine with the greek language, but while in the previous version (135) orders section the greek language was correct now (2.0.7) i see it like this : ÅëåõèÝñéïò ÊáóôåëëÜíïò.

What its the problem?

I have precisely the same problem. Who they is the solution?

How can i fix it?

File larous mhpws vrhkes lysh?