swissspidy
commented
1 year ago Steps, in other words, from https://github.com/Automattic/regenerate-thumbnails/issues/102:
- Upload a large JPG image. One dimension must be higher than 2560. It must be a JPG, not a PNG (it's possible that other formats have the same problem).
- Edit the uploaded image (rotate or flip will make it most obvious).
- Regenerate thumbnails for the image using this plugin.
- After regenerating, the image in the Media Library is reverted to the pre-edited version.
Bug Report
Test case 1, Step 1
As first step, just upload JPEG image that is larger than your current setting for 'big_image_size_threshold' (default is 2560 pixels). That would trigger automatic SCALING of image, on upload (see function wp_create_image_subsizes() in image.php). Make sure that your 'big_image_size_threshold' filter is not disabled or has value higher than your image pixel sizes.
Test case 2, Step 1
Another test would be to upload JPEG image with exif metadata [orientation] set to 2, 3 or 4. That would trigger automatic ROTATING of image on upload (see function wp_create_image_subsizes() in image.php), regardless of 'big_image_size_threshold'.
Further Test Steps for Test cases 1 & 2
Step 2: Edit the image (resize, rotate or flip etc) to get new metadata [sizes] set with edited images (where names are changed by new dimensions (WxH) and suffixing base-name with '-e' + 13 numeric characters).
Step 3: Regenerate the thumbnails.
Result: As far as I can read the code, edited image won't be attached anymore and in attachment metadata, edited thumbnails will be replaced with original thumbnails as created at upload.
Preconditions to be met:
This case is related only to NOT PNG ( == JPEG and maybe more?) type of images.
Original issue: https://github.com/Automattic/regenerate-thumbnails/issues/102
Attn: @azaozz