Thread thumnail showing last image instead of first


I have made a new thread with 3 image attachments, but the thread thumbnail displays the last of the 3 images instead of the first. What can I do in for the thread thumbnail to display the correct image?

This seems odd. It should be showing the first attachment. Could you provide a link to the thread in question?

Thank you for your help but i seem to have solved it by uploading the attachments in reverse order, so now it shows it correctly.