I have some files encoded in UTF-16 and if I check the frame headers of the TXXX tags, the encoding byte is set to 01.reposted from https://github.com/JamesHeinrich/getID3/issues/22
But when getid3 reads the TXXX tags, it shows the bom before the text description. I don't think it's the tagger - tried both mp3tag and picard. Here it is in mp3tag showing the charset and the extended tags:
and here is the output from demo.basic.php:
Xampp 1.8.3
getID3 version: 1.9.8-20140511
OS: Win7 x86
Chrome