There are a number of threads on here with all the dynamic font corruption issues that didn't seem resolved. Last I understood we were waiting on Unity to address them, but I know some "fixes" got put into 3.0, that I was unclear if ArenMook found workarounds for without Unity or not. In our current release (not using 3.0) I had to include a ridiculous amount of RequestCharactersInTexture calls all over the place to minimize the issues, but still isn't perfect.