Tried to create post in animation section, added large header image hoping to be detected as thumbnail. But after creating thread there was no thumbnail shown. And is unexpected behavior. Please delete
I now know why the thumbnails are not working! It’s not enough to simply link to hosted images (they will not be detected as thumbnails). Instead you must ‘Upload’ the image directly into the post, then it will become available for selecting as a thumbnail!!
I am very very sorry for the clutter!! But now I know how to create thumbnails!!