I am not sure i have tested it and it works fine in the new version, maybe somehow i did not upload the latest files, but it works fine already i will upload a video of this version, i am not sure if you change some setting or do you have any cache in there but as far as i know it just save some preferences with shoutbox buttons.
But as far as i can test it all works fine in the last version i wrote.
OK i think i have not uploaded the changed files package for some weird reason.
Now i upload the files and make some tests and found a bug related to cached user preferences for shoutbox with buttons, due they are stored, so i take care of those stuff and make some changes into core to make works fine with and without font style related buttons.
Test it and let me know...