hmmm that’s odd can you please check your /u/don.json on your site and see if you have user.user_option.auto_image_caption property?
Setting is working for me, and the captions are creating. There is some criteria for auto captions:
- it contains images
- images are not small (> 0.4 MP)
- their current alt text is bad (single word, less than 20 chars)
Is it still not creating captions even with images under this criteria?