Debian installer accessibility issue with Czech language / voice / spec characters

[Pavel Vlček <vlcekpavel93@gmail.com>]

Dear members and developers,

I found a small issue in the installer. When I select Czech language by 
typing 10 and pressing enter, voice is switched to Czech correctly, but 
speakup ignores special characters, such as + ě š č ř ž ý á í é, so some 
words in the installer are not correctly read. The braille table isn't 
switched to Czech, so reading these characters is impossible, because 
English table doesn't have these characters. So, how can I report this? 
I don't have Debian installed now, because my computer is incompatible, 
but I will install it when I buy a new Lenovo compatible computer. The 
issue is with the latest RC Debian installer, but also in version 8.

Thanks,

Pavel