I got confused by you talking about "resize" but maybe you mean "Scale Images..." under the Tools menu. Trying to reproduce your case (1):
First make a test case collection:
mkdir /tmp/test && cd /tmp/test
cp /usr/share/gthumb/albumthemes/Classic/*.png .
Then start gThumb from Applications menu, navigate to /tmp/test in Folders view.
Select the two first images, then Tools -> Scale Images...
Now Saving Destination looks fine. Select image type "PNG, "Overwrite" mode, and "Remove Originals", and click "Scale".
Seems like both images are scaled, but not exactly to the dimensions I asked for.
I got confused by you talking about "resize" but maybe you mean "Scale Images..." under the Tools menu. Trying to reproduce your case (1):
First make a test case collection: gthumb/ albumthemes/ Classic/ *.png .
mkdir /tmp/test && cd /tmp/test
cp /usr/share/
Then start gThumb from Applications menu, navigate to /tmp/test in Folders view.
Select the two first images, then Tools -> Scale Images...
Now Saving Destination looks fine. Select image type "PNG, "Overwrite" mode, and "Remove Originals", and click "Scale".
Seems like both images are scaled, but not exactly to the dimensions I asked for.