Special characters display gibberish on chat

Category: KAG Server
Operating system: Windows XP Professional SP3
Build number: 753
Description:

Any sentence you type that includes a word with either of the following characters:

- ñ
- á
- é
- í
- ó
- ú
- ¿

... is cut off starting from said character. It will either not display anything, display a single random character, or print out incoherent gibberish. This might also comprehend more special characters, though I have yet to test those.

The following was discovered on Beo's servers, which I assume have a German regional setting that might be what is preventing them to properly display. Testing these characters locally on the Sandbox they display correctly, since my regional setting is latinoamerican. I am unsure how these display on a NA server, as there was none available at the time this post was made.

Steps to reproduce:

1.- Join Beo's server (or any that don't have what I assume is a non-spanish system global Regional Setting).
2.- Type in a random sentence that includes a word that includes these characters (for example "Mañana", "Pájaro", "México", "Límite", "Definición", "Úrsula").

Screenshots/Videos: