XnView Software

The preview pane (yellow circle) show up when zoom in.

Tools > Settings.. View -- View tab -- Show Pan tool , I think.

Only shown when an image is zoomed in, I think.

One of a number of fairly recently added options which, personally, I would rather were not default settings, you might also ...

The preview pane (yellow circle) show up when zoom in.
I would like to disable it.
Thanks.