Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods How to change ingame font?

I created my own font replacer and it seems to work fine.
But sometimes the "new" font won't load and the default font shows up when I start the game. When I restart the game "my" font is there again.

What's causing this bug? It doesn't matter if I put the .pak-file to the \divinity original sin\data folder or to \documents\larian studios\divinity original sin\mods - both work and sometimes it doesn't.

It's very annoying, so how can I avoid this?