Settings » Media admin page I set the embed sizes as:
Thumbnail size: Width 320 x Height 320
Medium size: Max Width 300 x Max Height 300
Large size: Max Width 640 x Max Height 0
Maximum embed size : Width 640 x Height 0
Yet when I upload an image the media library offers me these options:
Full size: 1000x1000
Why is the large size coming up as 620x620? Shouldn't it be 640x640?