Yes, same problem here.
Latest dictionaries, i try firmware 7.4.9c and 7.4.9a same bug.
If all fileds in MS AD filled with english character phone shows it.
If russian - only number, not firstname or lasname.
At this time, spa504g and spa942 works fine.
Even with little bug, when in fields too much capslocked symbols and it's too long, phone shows some strange symbols.
Very disappointed in case of spa525g2. It shows number, but now names.
Also how i can switch between russian and english while typing in search fields?