Annotation exceptions for spaces are not working

The annotation activation settings on XWiki has a section to specify which spaces/pages should not have annotations activated. That exception list is not working properly, as I'm able to add annotations to pages listed.

Steps to reproduce:

1. Login in the wiki
2. Pick a page from the exception list
3. Select a portion of text and hit 'ctrl + m' to add an annotation
4. Save the annotation

This should not be possible, since the page is in the exception list.