No annotations shown when node is a revision (nid != vid)

I don't know, if it's really the problem, but here's what happened:

In my database-table "node", the "nid" (node-id) and "vid" (version-id for revisions) mostly differ from each other.
Just edit a page and create a new revision should give such ids.

The problem: no annotations are shown on an image on such a page.

The following modification of line 144 in image_annotate.module seems to solve the problem:
original: $element['#node']->vid
modified: $element['#node']->nid

$result = db_query('SELECT i.*, c.uid, c.comment, u.name FROM {image_annotate} i JOIN {comments} c ON i.cid = c.cid JOIN {users} u ON c.uid = u.uid WHERE i.field_name = \'%s\' AND c.nid = %d ORDER BY (i.size_height*i.size_width) ASC', $field['field_name'], $element['#node']->nid);