Notice that the image is truncated on the left and does not move as I enlarge the pane to give it room. It appears to occur only when only one image is displayed.
This layout is by design. There are some images that get truncated in width in the bottom layout as well, although I can't recall a specific example at the moment.
I'm sorry for being off topic, but Andrew, how do we minimize the Factbook search?
It's impossible.
As indicated, there is not currently a way to do this. I would recommend adding a suggestion for this to https://feedback.faithlife.com/boards/logos-desktop-app
Vote there to help us get a feel for how broadly this feature is desired.
Here's the suggestion Lucian has created: https://feedback.faithlife.com/boards/logos-desktop-app/posts/let-us-minimize-the-factbook-section-of-basic-search