Ok it’s 2021 and I’m still seeing this issue. If I get an image field from an option fieldset with the field set to return an array the output only includes the standard WordPress Images sizes in the [‘sizes’]. All of the custom image sizes are missing from the array. The image 100% exists and was generated on upload. But I cannot access it since get_field(‘my_image’,’option’) does not have my custom image in the [‘sizes’] array. I’ve deleted. Re-uploaded. Re-generated. Nothing. Weird.
