UTF-8 coded string coming back from radius server not showing properly

I also noticed this in the v.12.0.0, when I've set up the MFA two-factor. For me, the messages was appearing like "0x5061726120636f..........." instead of the hexadecimal chars converted. I did not have time to check the cause, but, by removing the multi-lingual characters (á,é,í,ç, ...) on the MFA messages, it worked. This is not a solution, but that's what I was able to do.