Generation of rendition doesn't work as intended

We’re using the renditions to render a preview of the image.

Adobe Stock Illustrator:
Renditions are limited to the 360 px for the short size of the rendition
Always generates an png file with the full width
Upload a file with FullHD 1920x1080 Pixel and requested a rendition with size 800. The API returned a png file with 8192 × 4608 Pixels.