Password with capital words always incorrect

[TesterPerson]

Problem with passwords like "smallBIG"

When I'm botting and enter password ************ I get "Password not correct"
I found that I can use F5 to show enterd password

It show "smallBig", not "smallBIG"

I have this problem if I use pressed Shift key to enter "BIG" as I always do
If I use CapsLocked pressed no problem - password correct