Editor scrolls to first initialized xinha field

Reported by Sjoerd Kranendonk, http://hippo.2275632.n2.nabble.com/Multiple-xinha-fields-on-edit-scrolls-to-first-edited-field-tp6928801p6928801.html

I have a document type with many body fields, which are all xinha-editable fields.
When you edit such a document, the xinha button bar loads (initializes) when you click on the field.

If I do this for multiple fields, the document scrolls back to the first field that was initialized.

When I save after each edit, thus de-initializing the field before initializing the next, this does not happen.

[FvL attached screenshots: just before clicking (before-more-click) and after (multi-xinha)]