I am having a bit of an issue with a required securefile field:

On some images, it gives a "this field cannot be left blank" error. This seems tied to image size, but is not affected by altering the max_size in the editable tag, and I'd expect it to give a file size error.

Is there another aspect at play here?

ETA: I've found that there seems to be a 2048px cutoff on the image sizes, that sometimes shows as an error and sometimes does not.