Error showing similar images

[alee001]

In the similar picture comparison results, it is found that three pictures are similar (Figure 1). If the second picture is selected before deleting the original first picture, a display error will occur (Figure 2).
XnView MP ver 1.8.3 64bits Windows

[xnview]

in your first screenshot there is only 2 similar images??

[alee001]

in your first screenshot there is only 2 similar images??

The result is three similar pictures (fig1), and two are left after deletion (fig2).

[xnview]

Thanks to your detailed description I can reproduce the problem.

[xnview]

This problem is supposed to be fixed in XnView MP 1.8.4. Please check and confirm the bug fix here.