Can't edit a pic and applying changes to Thumbnail only isn't working

[jnickelberry]

Add a pic to the media library.
Select a post and assign the image as the feature image
Edit the image and select 'apply changes to thumbnail only'
Crop and save the image.
Refresh the post.
View the slider and thumbnail on the homepage and the thumbnail changes don't look like they have been applied.

In most cases the images being used need to be cropped otherwise they will be cutoff while displayed as a thumbnail, so editing the image and only applying the edits to the Thumbnail is the best option but for some reason it doesn't appear that the edits being made are applied to the Thumbnail when viewing the thumbnail on the homepage.

[joemcgill]

Hi @jnickelberry,

Thanks for reporting this issue, and sorry for the delay in getting a response. Many themes create a custom post_thumbnail size which is different than the thumbnail image size that the edit screen refers to. Following the steps you provided, I see that the thumbnail size is cropped, but the post_thumbnail size is not, which is expected behavior.

If I've misunderstood, please feel free to reopen and include any new details required to reproduce the issue.

Thanks,
Joe