Display widgets with flickrRSS widget

I have Display widgets to choose which widget element to show on which page. But this is not working for flickrRSS widget. Any idea why it is working for every widget, except flickrRSS?

Here you can find further info with image:
https://dl.dropbox.com/u/16329292/flickrrss-widget-problem.jpg

Any hint is welcome.

Thanks,
Steffen

http://ww.wp.xz.cn/extend/plugins/flickr-rss/