I have made It.
So, I have tried one experiment. I've type the alt key in this control, where are letters and ofcourse, It started read It to me. This same thing in last used symbols.
Or, if You press alt+tab to move to another dialogue, It can also read. But, You can't read It, if You press tab after selection of symbol types.
I don't know, why, but this is maybe of the new world mistake, or maybe, Win 10....
I don't know.