Web API v1/playlists response cover image problem

[devrimco]

When I was making a Web API request for a playlist around 1-2 months ago the response for "images" was in 3 sizes. And the width and height were given.

And the response included the 640px one. As the second picture.

And now it is like the first picture.

Returns only one size, width and height are null, and the returned cover is the medium size.

Did something change? How can I overcome this? I need the large one, which even that is not large enough, it's 640px.