I just added a new variant for a Lemma on a Lexeme page: http://wikidata-lexeme.wmflabs.org/index.php?title=Lexeme:L15&diff=118&oldid=93
When trying to remove I can remove it and save the edit. It it is removed on the page but the edit is not persistent across a page reload.
Setting to high because this messes up our demo data.