Switching from a language with 512 characters to a language with 256 characters will cause the wrong characters beeing displayed.

Really simple to reproduce. Just copy the "English" folder and give that folder another name, like "Czech". Now change <characters> to 512 in the Czech strings.xml. Start MP, open the configuration window with F2 and switch from English to Czech and let MP restart. Everything looks fine. Now open the configuration window again with F2 and switch from Czech back to English and let MP restart. Now the fonts in Home are screwed up.