I have created testing credentials in keepassx.

test/q4&?3(4%.Do#h)D

However when I use auto-type written password is different:

test/q$7<#($_.Do3h]D

I'm not sure how to debug this, to be honest or what information might be
helpful.

So there is at least something.

> locale
LANG=cs_CZ.UTF-8
LC_CTYPE=cs_CZ.UTF-8
LC_NUMERIC="cs_CZ.UTF-8"
LC_TIME="cs_CZ.UTF-8"
LC_COLLATE="cs_CZ.UTF-8"
LC_MONETARY="cs_CZ.UTF-8"
LC_MESSAGES="cs_CZ.UTF-8"
LC_PAPER="cs_CZ.UTF-8"  
LC_NAME="cs_CZ.UTF-8"
LC_ADDRESS="cs_CZ.UTF-8"
LC_TELEPHONE="cs_CZ.UTF-8"  
LC_MEASUREMENT="cs_CZ.UTF-8"
LC_IDENTIFICATION="cs_CZ.UTF-8"
LC_ALL= 

# rpm -qv keepassx
keepassx-2.0.2-4.4.x86_64

Feel free to ask for any info.