XnView Software

The following steps does not work:

1. File => export
2. Activate auto-preview button in the middle of the window

A click on this button does not automatically show a preview.
You must use the single preview button to get a preview picture.

Furthermore it would be nice, if XnviewMP could save the last state of the button.

Thanks to your detailed description I can reproduce the problem.

This problem is supposed to be fixed in XnView MP 1.6.0. Please check and confirm the bug fix here.

Yes, i confirm that this issue was fixed (1.6.0 Linux .deb).
After enabling "Automatic preview refresh" button in Export dialogue. It started generating preview automatically across all new XNView MP sessions.