With this version (but may also be other recent versions) when images are added to pages, the first page goes to "Page 0" and so disappears. But the image(s) on that page are still listed in the queue.
As a results image(s) on "Page 0" have to be added a second time and the images of "Page 0" then removed from the queue.
Peter,
I am trying to replicate... I cannot get anything to go wrong...
How about some information as to your settings..
Placement. Print size. Auto crop on/off. Orientation Lock on or off.... stuff like that.
Before page 1, there is a screen called Sample.
Fred