When I try to rotate a group of selected images, only the first in the
selection is appears to be rotated:

- select several images in gthumb (drag or ctl-click them)
- click on the rotate icon
- click "apply to all images"
- click the rotate button
- click OK

The result is that, in the thumbnails, only the 1st image is rotated.

Actually, sometimes the other images are rotated but the thumbnails
aren't, and sometimes none of the images are rotated.  I can't figure
out when which type of problem occurs but there will always be a problem
of some sort when a group of images is rotated.  

Note: there's a similar problem on the updated version of gthumb, 2.1.2