Under Options->Tags->Mpeg, the ID3v2 character coding in v2.35 defaulted to UTF-16. Upgrading to v2.36 changes the default to UTF-8. This causes a weird extra character to be displayed at the end of each field (Artist, Title, etc.) in iTunes.
I'm annoyed because this has taken me a couple of hours to sort out. I think the default should stay the same, namely UTF-16.
It's an iTunes bug. That program doesn't fully support ID3v2.4 UTF-8 tags.
I also got the square charachter at the end of each field. Wich was bugging bugging me too. For now we'll just have to use the ID3v2.3 UTF-16 option in this great program.
Although it would have been nice to see the changed defaulted coding mentioned in the changelog.
That would have saved you a (valuable I'm sure) couple of hours.
Salute, Paz
Mmm, seems like I've changed the default to ID3v2.4 UTF-8, but there's nothing I can do now.
Though this is not considered as a bug, since ID3v2.4 with UTF-8 are perfectly valid ID3v2 tags too.
I've changed the version on the server to default to ID3v2.3 with UTF-16. Maybe this will reduce the trouble for many people (including the support team 
).