It does not, because you are using an older version of the ooo2-thumbnailer script (which is attached to the comment, I've posted a link for). To get the updated preview, you have (after installing the new script, of course) to clean the Thumbnail-cache.
It does not, because you are using an older version of the ooo2-thumbnailer script (which is attached to the comment, I've posted a link for). To get the updated preview, you have (after installing the new script, of course) to clean the Thumbnail-cache.