Issue: Asset Script Generates Missing Thumbnail at 1x1 Resolution

When there is not already a thumbnail generated for an image for whatever reason (maybe the extension wasn't set as an image type prior to the original upload, or maybe the default thumbnail sizes were changed), the asset script tries to generate the missing thumbnail if the requested size is smaller than or equal to the next thumbnail size.

However, the asset script always generates a 1x1 pixel image in this case, rather than the expected thumbnail size.

Fixed in the next release.