I’m not very familiar with Traktor, but it seems this is just the way it displays ID3 comments. In ID3 a comment gets written to a COMM frame and can have an additional description. In this case the description is “Songs-DB_Ocassion_album”. The Songs-DB* comment tags are used by MusicBee for custom data.
Picard handles that by internally naming the tag comment:description, so in this case the tag name is comment:Songs-DB_Ocassion_album with a value of “Chillout”.
Traktor seems to handle that differently and instead displays the description in parantheses behind the value.
If you don’t want this you could also save just a comment or comment: tag in Picard, which would result in a tag with empty description. Then I assume Traktor would just show the value. But the comment would also loose it’s special meaning given by the description.
Glad that this fixed the issue for you. This usage of arbitrary tags had been one of the reasons why the last.fm plus plugin had been removed from the official list of plugins.
For genres I’d recommend you try the built-in genre support using data from MusicBrainz or if that does not work for you or you really want to use last.fm data use the last.fm plugin from the official plugins list.